Abstract
Plant breeding research remains a cornerstone for sustainable agricultural development, particularly in ecologically diverse and climate-vulnerable regions. In southern Ethiopia, the Ari, South Omo, Konso, and Basketo zones represent distinct agroecological systems with diverse cropping patterns and production constraints. However, breeding research conducted in these zones remains fragmented and poorly synthesized. This systematic review aimed to assess the scope, trends, breeding approaches, target crops, and major research gaps in plant breeding studies undertaken in the four zones. The review followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) framework. Relevant literature published between 2000 and 2025 was retrieved from peer-reviewed journals, university repositories, institutional reports, and conference proceedings. Only studies conducted in, or explicitly reporting results from, the Ari, South Omo, Konso, and Basketo zones were included. A total of 48 studies met the inclusion criteria. total of 48 studies met the inclusion criteria, with most studies conducted in South Omo and Konso zones, while comparatively fewer studies were reported from Ari and Basketo zones, indicating uneven research coverage across the study area. Results revealed that sorghum, maize, enset, finger millet, cowpea, and root crops received the greatest research attention among breeding studies conducted in the four zones. The primary breeding objectives included drought tolerance, disease resistance, yield enhancement, early maturity, and farmer-preferred traits. Conventional and participatory breeding methods were the most commonly employed approaches, accounting for approximately 85–90% of the reviewed studies, whereas molecular breeding approaches were reported in only 4.2% of studies. Significant knowledge gaps were observed in Basketo and Ari zones, particularly due to the limited number of breeding studies available, making it difficult to draw comprehensive conclusions regarding germplasm improvement, variety development, and breeding approaches in these areas. The review highlights the urgent need for integrated breeding programs, enhanced seed system development, and greater application of molecular breeding tools to strengthen food security and climate resilience in southern Ethiopia.
Keywords
Plant Breeding, Systematic Review, Southern Ethiopia, Crop Improvement, Climate Resilience
1. Introduction
Plant breeding is essential for agricultural development. It allows us to create crop varieties that not only yield more but also stand up to pests, harsh weather, and even offer better nutrition. By blending traditional methods with modern techniques, plant breeding has helped farmers grow crops that can handle new environmental and production challenges. This work is vital for boosting farm productivity, securing our food supply, and building resilience against climate change especially in developing countries, where farming is the main way people make a living
| [1] | Fadda C, Mengistu DK, Kidane YG, Dell’Acqua M, Pè ME and Van Etten J (2020) Integrating Conventional and Participatory Crop Improvement for Smallholder Agriculture Using the Seeds for Needs Aproche: A Review. Front. Plant Sci. 11: 559515. https://doi.org/10.3389/fpls.2020.559515 |
| [2] | Ceccarelli, S., & Grando, S. (2020). Participatory plant breeding: Who did it, who does it, and where? Experimental Agriculture, 56(1), 1–11.
https://doi.org/10.1017/S001447971900012 |
[1, 2]
.
In Ethiopia, Agriculture is the basis of the country's economy, supporting jobs, household incomes, and the national food supply. Smallholder farmers produce most of the food and account for over 90% of Ethiopia's agricultural output
| [3] | Temesgen, H., & Aweke, C. S. (2023). A scoping review on the impacts of smallholder agriculture production on food and nutrition security: Evidence from Ethiopia context. Agriculture & Food Security, 12, 39. https://doi.org/10.1186/s40066-023-00431-5 |
[3]
. These farmers work across a stunning variety of landscapes from the highlands, where cereals dominate, to the lowlands, where agropastoral systems prevail. That's why plant breeding has become such a key strategy for improving crops, helping farmers adapt, and strengthening food security across the country.
Over the past few decades, concrete progress has been made in breeding major crops like maize, wheat, teff, barley, sorghum, and common bean
| [4] | Merga, M. (2018). Progress, achievements and challenges of tef breeding in Ethiopia. Journal of Agricultural Science and Food Research, 9, 204. |
| [5] | Ethiopian Seed Authority. (2024). National variety register: Crop varieties released from 1970 to 2023. Addis Ababa, Ethiopia. |
[4, 5]
. Improved varieties now offer higher yields, better disease resistance, and greater tolerance to drought and poor soil. Studies in Ethiopia have shown that simply diversifying the crop varieties farmers plant and improving seed distribution can make a huge difference in food security and farm resilience
| [6] | Wossen, T., et al. (2021). Wheat varietal diversification increases Ethiopian smallholders' food security: Evidence from a participatory development initiative. Sustainability, 13(3), 102. https://doi.org/10.3390/su1303102 |
[6]
. Similarly, using more diverse crops and better technologies has been linked to greater food security among rural farming communities
| [7] | Mengistu, D. D., Degaga, D. T., & Tsehay, A. S. (2021). Analyzing the contribution of crop diversification in improving household food security among wheat dominated rural households in Sinana District, Bale Zone, Ethiopia. Agriculture & Food Security, 10, 7.
https://doi.org/10.1186/s40066-020-00293-8 |
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.
However, the benefits of modern crop improvement programs haven't reached every part of the country equally. Historically, most national breeding efforts have focused on staple crops and the more promising farming areas, leaving many remote and marginalized regions behind. As a result, some communities still rely on traditional landraces and farmer-saved seeds. While these options are well adapted to local conditions, they often struggle to keep up with growing challenges like climate change, new pests and diseases, and declining soil fertility.
The Southern Nations, Nationalities, and Peoples' Region (SNNPR)---which has recently been restructured into several new regional states---is one of the most agriculturally diverse in all of Ethiopia. This area is home to a remarkable range of agro-ecologies, rich local knowledge, and many different cropping patterns. Zones like Ari, South Omo, Konso, and Basketo each have their own unique farming systems, and together they play a vital role in local food production and supporting people's livelihoods
| [8] | Gari, J. A. (2017). Participatory varietal selection of sorghum in Konso Special Woreda, Ethiopia (MSc Thesis). Hawassa University, Hawassa, Ethiopia. |
| [9] | Zewdu, S., & Tsegaye, D. (2018). Participatory evaluation of sorghum varieties for drought-prone areas of Konso zone. Journal of Agricultural Extension and Rural Development, 10(6), 110–119. https://doi.org/10.5897/JAERD2017.0917 |
[8, 9]
.
These zones are incredibly different from one another---both in environment and in how people farm. In the Ari zone, you'll find a mix of crop and livestock production
| [10] | Tesfaye, B., & Wolde, G. (2019). Breeding priorities for root and tuber crops in Ari and Basketo zones. Ethiopian Journal of Plant Breeding, 8(1), 15–27. |
[10]
. South Omo is more focused on agropastoral and pastoral activities
| [11] | Alemu, D., Wondimu, W., & Mamo, T. (2020). Evaluation of improved cassava varieties for root yield and adaptation in South Omo zone, Ethiopia. Jinka Agricultural Research Center Technical Report, 12, 1–19. |
| [12] | Mamo, B., Alemu, D., & Shiferaw, W. (2023). Performance of improved rice and cassava varieties under irrigation in Dasenech district, South Omo. Journal of Irrigation and Drainage Systems, 37(1), 55–68. |
[11, 12]
. Konso is famous for its ancient terracing and dryland farming methods
| [13] | Liben, L., Ejamo, M., Bergena, A., & Bulke, A. (2025). On-farm demonstration and evaluation of newly released soybean (Glycine max) varieties with production technology in pre-extension approach at Karat zuria district, Konso zone, Southern Ethiopia. Omo International Journal of Sciences, 8(2), 49–60. https://doi.org/10.59122/omoijs796 |
[13]
and Basketo produces a variety of cereals, root crops, and horticultural crops
| [14] | Selamawit, M. (2025). Assessment of enhanced tef varieties in the Basketo Zone, southern Ethiopia. Journal of Catalyst & Catalysis, 11(1), 1–9. |
[14]
. Despite all this agricultural value, these areas face the same stubborn problems: recurring drought, unpredictable rainfall, declining soil quality, pests and diseases, weak seed supply systems, and very limited access to improved crop varieties.
Furthermore, global warming has only made things worse. It has escalated the production risks in these regions, which means we urgently need plant breeding efforts that are tailored to each specific location
| [15] | Assefa, K., & Teshale, T. (2019). Breeding for drought tolerance in sorghum: Lessons from lowland Ethiopia. African Journal of Agricultural Research, 14(22), 945–956. |
| [16] | Worku, W., & Zelleke, H. (2020). Participatory variety selection of maize in mid-altitude areas of southern Ethiopia. Journal of Crop Science and Biotechnology, 23(4), 345–356.
https://doi.org/10.1007/s12892-020-00049-5 |
[15, 16]
. Developing new crop varieties that actually fit local agroecological conditions is absolutely critical both for keeping agriculture productive and for helping small-scale farmers become more resilient.
That said, the existing research on plant breeding activities in these zones is scattered and hard to piece together. It's spread across university theses, journal articles, organizational reports, and project documents with no single place where it all comes together.
To date, no one has done a systematic review of plant breeding research specifically in the Ari, South Omo, Konso, and Basketo zones. So, there's a real gap in our understanding. We don't have a clear picture of the scope, the objectives, or even the actual results of breeding research in these areas. That's why conducting a systematic review is so important---it would help us understand research trends, identify which major crops have been the focus of breeding studies, see what methods have been used, and uncover the gaps that still need attention.
The evidence gathered from this study won't just sit on a shelf. It can help shape future breeding priorities, inform smarter policies, and contribute to a more sustainable transformation of agriculture in southern Ethiopia. Therefore, the Main Objective of the review is to conduct a systematic review of plant breeding research specifically in the Ari, South Omo, Konso, and Basketo zones of southern Ethiopia.
2. Materials and Methods
2.1. Description of the Study Area and Major Cropping Systems
The Ari Zone is found in the northeastern part of the South Ethiopia Regional State. It has agroecologies in mid to highland zones (1500-3000 m.a.s.l), which receive regular rainfall throughout the year. Enset (
Ensete ventricosum), maize, sorghum, teff, and root crops are the key crops. Among others, Enset is important in the region as a basic food source but is underdeveloped genetically, unlike cereals
| [17] | Yemataw, Z., & Bekele, A. (2022). Genetic diversity and breeding of enset in Ethiopia: A review. Genetic Resources and Crop Evolution, 69, 1021–1035.
https://doi.org/10.1007/s10722-021-0 |
| [18] | Reda, F., & Mohammed, A. (2020). Enset (Ensete ventricosum) genetic improvement: Challenges and opportunities in southern Ethiopia. African Journal of Agricultural Research, 15(8), 1108–1120. https://doi.org/10.5897/AJAR2020.14832 |
[17, 18]
.
South Omo is in the south-west lowlands of Ethiopia and covers an altitude range between 376-2000 m.a.s.l. This region has a semi-arid and arid type of climatic condition with unpredictable rainfall patterns and frequent drought occurrences. The dominant crops are sorghum, followed by maize, finger millet, and cowpea. Sesame is grown as a cash crop in the region
| [19] | Tadesse, T., & Legesse, Z. (2021). Participatory varietal selection of cowpea in moisture-stressed areas of South Omo. Journal of Dryland Agriculture, 7(2), 34–44. |
[19]
. Priority in breeding work includes drought tolerance, striga resistance, and heat tolerance traits.
The Konso Zone is an agroecological setting for both highland and mid-altitude (800-2000 m.a.s.l). It is known as one of the most intensively terraced regions with soil and water conservation measures practiced by farmers for centuries. The agricultural knowledge of the Konso culture is even awarded by UNESCO with a Cultural Landscape recognition. The main crops include sorghum (main food), finger millet, maize, and cowpea
| [8] | Gari, J. A. (2017). Participatory varietal selection of sorghum in Konso Special Woreda, Ethiopia (MSc Thesis). Hawassa University, Hawassa, Ethiopia. |
| [13] | Liben, L., Ejamo, M., Bergena, A., & Bulke, A. (2025). On-farm demonstration and evaluation of newly released soybean (Glycine max) varieties with production technology in pre-extension approach at Karat zuria district, Konso zone, Southern Ethiopia. Omo International Journal of Sciences, 8(2), 49–60. https://doi.org/10.59122/omoijs796 |
[8, 13]
.
Basketo Zone is a mid- to high-altitude zone (1200--2800 m.a.s.l) with relatively favorable rainfall. Enset, maize, sweet potato, and taro are major crops. The zone has received less research attention than its neighbors, and breeding efforts have been sporadic, often linked to student theses or extension projects
| [4] | Merga, M. (2018). Progress, achievements and challenges of tef breeding in Ethiopia. Journal of Agricultural Science and Food Research, 9, 204. |
| [14] | Selamawit, M. (2025). Assessment of enhanced tef varieties in the Basketo Zone, southern Ethiopia. Journal of Catalyst & Catalysis, 11(1), 1–9. |
[4, 14]
.
2.2. Review Design
This study employed a systematic review design guided by the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) framework
| [20] | Page, M. J., McKenzie, J. E., Bossuyt, P. M., et al. (2021). The PRISMA 2020 statement: an updated guideline for reporting systematic reviews. BMJ, 372, n71.
https://doi.org/10.1136/bmj.n71 |
[20]
. The PRISMA guideline was adopted to ensure a transparent, rigorous, and reproducible process for identifying, screening, selecting, and synthesizing relevant literature related to plant breeding research conducted in the Ari, South Omo, Konso, and Basketo zones of southern Ethiopia. The review process was structured around clearly defined research questions, a comprehensive literature search strategy, predetermined inclusion and exclusion criteria, and a systematic approach to data extraction and synthesis. This methodological framework was selected to provide a comprehensive synthesis of existing evidence, identify research trends, and highlight critical knowledge gaps that require further investigation.
2.3. Literature Search Strategy
A comprehensive literature search was conducted to identify published and unpublished studies related to plant breeding research in the four target zones. Relevant literature was retrieved from multiple sources, including Google Scholar, university digital repositories, institutional research databases, conference proceedings, and reports from agricultural research centers. In addition, theses and dissertations from Ethiopian universities were included to capture grey literature that may not be available in indexed journals
| [8] | Gari, J. A. (2017). Participatory varietal selection of sorghum in Konso Special Woreda, Ethiopia (MSc Thesis). Hawassa University, Hawassa, Ethiopia. |
[8]
. Search terms and Boolean operators were carefully combined to improve the sensitivity of the search. Examples of search strings included
"plant breeding and South Omo," "crop improvement and Konso," "variety evaluation and Ari," "participatory breeding and Basketo," and
"genotype evaluation and southern Ethiopia." The search focused on studies published between 2000 and 2025 to capture both historical and recent developments in breeding research within the study areas.
2.4. Inclusion and Exclusion Criteria
Studies were included in the review if they specifically focused on any of the four zones (Ari, South Omo, Konso, and Basketo) and addressed topics related to plant breeding, crop improvement, variety adaptation, genotype evaluation, or participatory variety selection. Both peer-reviewed journal articles and grey literature such as MSc theses, PhD dissertations, institutional reports, and conference papers were considered eligible, provided that sufficient methodological details and results were reported
| [8] | Gari, J. A. (2017). Participatory varietal selection of sorghum in Konso Special Woreda, Ethiopia (MSc Thesis). Hawassa University, Hawassa, Ethiopia. |
| [9] | Zewdu, S., & Tsegaye, D. (2018). Participatory evaluation of sorghum varieties for drought-prone areas of Konso zone. Journal of Agricultural Extension and Rural Development, 10(6), 110–119. https://doi.org/10.5897/JAERD2017.0917 |
[8, 9]
. Only studies published in English were included. Studies were excluded if they focused solely on agronomic management practices without a breeding objective, were conducted outside the target zones, or lacked sufficient methodological and results information relevant to the review questions.
2.5. Data Extraction and Synthesis
Data from the selected studies were systematically extracted using a standardized data extraction form developed for this review. The extracted information included the author(s), year of publication, study location, crop species, breeding objectives, traits targeted, breeding methods used, key findings, and recommended or released varieties. The extracted data were then synthesized using a narrative synthesis approach, whereby studies were grouped according to crop type, breeding objectives, and geographic location. The synthesis emphasized the identification of major research trends, dominant crops and traits under investigation, breeding approaches employed, and existing research gaps across the four zones. Where possible, findings were summarized in tables and descriptive comparisons to improve clarity and facilitate interpretation.
3. Results
3.1. Study Areas
The review focused on four administrative zones in southern Ethiopia: Ari, South Omo, Konso, and Basketo. These zones are characterized by diverse agroecological conditions ranging from lowland to midland environments, which support a wide variety of agricultural production systems.
Ari Zone is predominantly a midland agroecological area with mixed crop–livestock farming systems. The zone is known for the production of staple cereals, root and tuber crops, and enset-based farming systems, which are important for food security and household income.
South Omo Zone is highly diverse agroecologically, encompassing lowland pastoral, agro-pastoral, and riverine farming systems. Major crops include maize, sorghum, rice (in irrigated areas), cassava, and other drought-tolerant crops adapted to moisture-stressed environments.
Basketo Zone is relatively small but ecologically diverse, with mixed farming systems similar to neighboring zones. The area supports crops such as maize, enset, root crops, and other food security–important species; however, it remains less studied in plant breeding research compared to the other zones.
Overall, these zones represent important but highly heterogeneous agroecological systems in southern Ethiopia, making them suitable for evaluating plant breeding research trends, varietal development efforts, and crop improvement gaps.
3.2. Geographic Distribution of Breeding Research
The reviewed breeding studies conducted by the Jinka Agricultural Research Center showed unequal geographic distribution across the study zones (
Table 1). South Omo accounted for the highest proportion of studies (33.3%), followed by Konso (27.1%), Ari (20.8%), and Basketo (18.8%). The higher concentration of studies in South Omo and Konso indicates greater research attention toward drought-prone and agropastoral production systems where crop improvement interventions are highly required. The distribution also reflects the importance of sorghum and maize production in these zones and the increasing need for climate-resilient crop varieties.
Table 1. Distribution of reviewed studies by zone.
Zone | Number of studies | Percentage (%) |
South Omo | 16 | 33.3 |
Konso | 13 | 27.1 |
Ari | 10 | 20.8 |
Basketo | 9 | 18.8 |
Total | 48 | 100 |
3.3. Major Crops and Traits Targeted
The reviewed studies revealed that sorghum was the most frequently studied crop, followed by maize, enset, finger millet, cowpea, and root crops (
Table 2). Sorghum received considerable research attention because it is a major staple food crop in South Omo and Konso zones and is well adapted to semi-arid conditions. The major breeding objectives identified across the studies included drought tolerance, early maturity, heat tolerance, disease resistance, and yield improvement. These traits are highly important for southern Ethiopia, where rainfall variability and moisture stress are major production constraints. Participatory breeding approaches also emphasized farmer-preferred and climate-resilient crop varieties adapted to local agroecological conditions.
Table 2. Major crops targeted by breeding research.
Crop | Frequency | Percentage (%) | Main target traits |
Sorghum | 14 | 29.2 | Drought tolerance, Striga resistance, yield |
Maize | 10 | 20.8 | Early maturity, drought tolerance |
Enset | 7 | 14.6 | Disease resistance, yield stability |
Finger millet | 5 | 10.4 | Yield, maturity |
Cowpea | 4 | 8.3 | Heat tolerance, grain quality |
Root crops | 8 | 16.7 | Yield, pest resistance |
3.4. Breeding Methods Used
The reviewed studies encompassed conventional breeding, molecular breeding, participatory plant breeding (PPB), and participatory varietal selection (PVS) approaches (Table 3). Conventional breeding methods dominated the literature and primarily involved multi-location yield trials, line selection, and adaptation testing across diverse agroecological environments. However, participatory approaches have gained increasing importance, particularly in sorghum and maize improvement programs, where farmers’ trait preferences significantly influence varietal selection, adoption, and utilization. The synthesis of reviewed studies further indicated that active farmer participation in trait selection, varietal evaluation, and decision-making processes enhanced the acceptance of newly released varieties and contributed to the sustainability of breeding programs. In particular, participatory varietal selection (PVS) proved highly effective in accelerating the identification and dissemination of superior genotypes adapted to diverse agroecological conditions in Ethiopia. Although molecular breeding approaches were included in a small proportion of studies (4.2%), their integration with conventional and participatory methods remains limited, indicating a clear gap in the application of modern breeding tools in the region.
Table 3. Breeding methods employed.
Breeding method | Frequency | Percentage (%) |
Conventional breeding | 22 | 45.8 |
Participatory breeding | 16 | 33.3 |
Variety evaluation / adaptation | 8 | 16.7 |
Molecular breeding | 2 | 4.2 |
3.5. Crop Varieties Evaluated/Recommended for Specific Zones
The major food crop varieties released, evaluated, and recommended across Ari, Konso, South Omo, and Basketo zones include cereals, legumes, and oil crops adapted to diverse agroecological conditions (
Table 4). In Ari and South Omo zones, improved maize hybrids such as BH-546 and BH-661, These findings are supported by variety evaluation studies conducted in Debub Ari District, where improved maize varieties demonstrated superior adaptation and yield performance under local conditions
| [25] | Hailu, F., Merga, D., & Tesfaye, B. (2022). Evaluation of improved maize varieties in Debub Ari district, southern Ethiopia. Jinka University Research Report, 5, 22–35. |
[25]
along with drought-tolerant sorghum varieties including Melkam and Teshale, have demonstrated promising adaptation and yield performance. In Konso zone, soybean varieties such as Gazale and Nyala were demonstrated and recommended under farmer field conditions. Similarly, in Basketo zone, improved tef varieties including Quncho, Dagim, and Boset showed good adaptation and stable performance under local environments. These findings highlight the importance of location-specific variety evaluation in enhancing crop productivity across diverse agroecological systems in southern Ethiopia.
The reviewed literature further highlights the significant role of regional agricultural research institutions in identifying and promoting suitable crop varieties for different agroecological zones. Multi-location evaluation trials conducted under both on-station and on-farm conditions facilitated the selection of superior genotypes for farmer adoption. For example, improved cassava varieties evaluated across several locations showed high yield potential and adaptability, resulting in the recommendation of well-performing varieties for local production system. Moreover, under irrigation-based production systems in the Dasenech District of South Omo Zone, both cassava and rice varieties were assessed and found to possess favorable yield performance and adaptation to lowland environments. These findings underscore the importance of location-specific variety evaluation and recommendation in enhancing agricultural productivity and promoting sustainable crop production across southern Ethiopia.
Table 4. Released, Evaluated, and Recommended Crop Varieties in Ari, Konso, South Omo, and Basketo Zones, Southern Ethiopia.
Zone | Crop | Variety | Status | Year of Release / Evaluation | Breeding / Research Center | Agroecology Suitability | Remark |
Ari | Maize | BH-546 | Released | 2013 | High yield, mid-lowland | Ari | Maize |
Ari | Maize | BH-547 | Released | 2013 | Moisture sufficient areas | Ari | Maize |
Ari | Sorghum | Melkam | Released | 2009 | Drought tolerant, lowland | Ari | Sorghum |
Ari | Sorghum | Teshale | Released | 2002 | Dry zone adaptation | Ari | Sorghum |
Ari | Common bean | Nasir | Released | 2003 | Food & cash crop | Ari | Common bean |
Ari | Finger millet | Tadesse | Evaluated | — | Farmer preferred | Ari | Finger millet |
Konso | Soybean | Gazale | New release | 2022/23 | Recommended for Karat Zuria | Konso | Soybean |
Konso | Soybean | Nyala | Evaluated | 2022/23 | Comparative trial | Konso | Soybean |
Konso | Sorghum | Melkam | Released | 2009 | Moisture stress tolerant | Konso | Sorghum |
Konso | Maize | Melkassa-2 | Released | 2004 | Early maturin | Konso | Maize |
South Omo | Groundnut | Sedi | Released | 2006 | Warm dry areas | South Omo | Groundnut |
South Omo | Groundnut | Manipinter | Evaluated | — | Good seed size | South Omo | Groundnut |
South Omo | Sorghum | Teshale | Released | 2002 | Semi-arid adaptatio | South Omo | Sorghum |
South Omo | Maize | BH-661 | Released | 2011 | High productivity | South Omo | Maize |
Basketo | Tef | Quncho | Released | 2006 | High market demand | Basketo | Tef |
Basketo | Tef | Boset | Released | 2012 | High yield | Basketo | Tef |
Basketo | Tef | Dagim | Evaluated | Recent | Adaptation trial | Basketo | Tef |
Basketo | Maize | BH-546 | Released | 2013 | Mid-altitude | Basketo | Maize |
Basketo | Common bean | Awash-1 | Released | 1980 | Widely grow | Basketo | Common bean |
Table 5. Varieties evaluated as best performers and recommended for farmers in Ari, Konso, South Omo and Basketo Zones by Jinka Agricultural Research Center.
Zone | Crop | Recommended Varieties | Key Trait / Farmer Preference |
Ari | Soybean | Gazelle, Gishama, Pawe-2 | High grain yield |
Ari | Finger Millet | Tadesse, Tesema, Kako-1 | High grain yield |
Konso | Soybean | Gazale | Preferred for seed size, color, and marketability |
Konso | Pigeon Pea | Ashenafi | High yield, earliness, large seed size |
Basketo | No data | No specific varieties found | Major crops: Enset, maize, coffee, sweet potatoes |
4. Discussion
The findings of this review indicate that plant breeding research in Ari, South Omo, Konso, and Basketo zones is largely shaped by agroecological conditions and local farming priorities
| [10] | Tesfaye, B., & Wolde, G. (2019). Breeding priorities for root and tuber crops in Ari and Basketo zones. Ethiopian Journal of Plant Breeding, 8(1), 15–27. |
| [19] | Tadesse, T., & Legesse, Z. (2021). Participatory varietal selection of cowpea in moisture-stressed areas of South Omo. Journal of Dryland Agriculture, 7(2), 34–44. |
[10, 19]
.
The dominance of sorghum breeding studies in South Omo and Konso zones is consistent with the crop's importance as a drought-tolerant staple in semi-arid environments
| [15] | Assefa, K., & Teshale, T. (2019). Breeding for drought tolerance in sorghum: Lessons from lowland Ethiopia. African Journal of Agricultural Research, 14(22), 945–956. |
| [21] | Legesse, Z., Gudeta, J., Tadesse, F., et al. (2023). Participatory varietal selection of sorghum for mid-land areas of East Hararghe Zone, Ethiopia. Journal of Plant Sciences, 11(5), 155–159. https://doi.org/10.11648/j.jps.20231105.12 |
[15, 21]
. Similar findings on genotype-by-environment interaction and yield stability have also been reported for maize hybrids evaluated in southern Ethiopia
| [23] | Demissie, A., & Tadesse, T. (2021). Genotype by environment interaction and yield stability of maize hybrids in southern Ethiopia. Journal of Crop Improvement, 35(4), 467–483.
https://doi.org/10.1080/15427528.2021.1883857 |
[23]
. who found that participatory varietal selection accelerated the identification of superior sorghum genotypes in Ethiopia. Earlier studies also demonstrated that participatory varietal selection enhances farmer adoption and maintains genetic diversity in sorghum production systems
| [22] | Mulatu, E., & Belete, K. (2001). Participatory varietal selection in lowland sorghum in eastern Ethiopia: Impact on adoption and genetic diversity. Experimental Agriculture, 37, 211–229.
https://doi.org/10.1017/S0014479701002078 |
[22]
.
| [26] | Wendmu, T. A., Cuni-Sanchez, A., Abebe, H. T., & de Boer, H. J. (2022). Cultural effects on sorghum varieties grown, traits preferred, and seed management practices in northern Ethiopia. Economic Botany, 76, 233–249.
https://doi.org/10.1007/s12231-022-09554-3 |
[26]
demonstrated that cultural factors and farmer preferences strongly influence sorghum variety selection and seed management practices in Ethiopia.
The increasing use of participatory breeding methods is a positive development
| [2] | Ceccarelli, S., & Grando, S. (2020). Participatory plant breeding: Who did it, who does it, and where? Experimental Agriculture, 56(1), 1–11.
https://doi.org/10.1017/S001447971900012 |
| [14] | Selamawit, M. (2025). Assessment of enhanced tef varieties in the Basketo Zone, southern Ethiopia. Journal of Catalyst & Catalysis, 11(1), 1–9. |
[2, 14]
. Farmers in these regions frequently prioritize traits beyond grain yield, including early maturity, grain color, biomass production, taste, storage quality, and resilience under low-input conditions
| [9] | Zewdu, S., & Tsegaye, D. (2018). Participatory evaluation of sorghum varieties for drought-prone areas of Konso zone. Journal of Agricultural Extension and Rural Development, 10(6), 110–119. https://doi.org/10.5897/JAERD2017.0917 |
| [27] | Gebremedhin, W., & Gashaw, A. (2022). Farmers’ trait preferences for maize in lowland agroecologies of South Omo. Journal of Agricultural Extension and Rural Development, 14(3), 112–123. https://doi.org/10.5897/JAERD2021.1234 |
[9, 27]
. This aligns with findings by
| [26] | Wendmu, T. A., Cuni-Sanchez, A., Abebe, H. T., & de Boer, H. J. (2022). Cultural effects on sorghum varieties grown, traits preferred, and seed management practices in northern Ethiopia. Economic Botany, 76, 233–249.
https://doi.org/10.1007/s12231-022-09554-3 |
[26]
, who demonstrated that farmer trait preferences significantly influence varietal adoption and seed management practices in Ethiopia.
A major concern identified is the limited application of molecular breeding tools, which accounted for only 4.2% of reviewed studies
| [28] | Dwivedi, S. L., et al. (2021). Molecular breeding for climate resilience in staple crops. Frontiers in Plant Science, 12, 654789. https://doi.org/10.3389/fpls.2021.654789 |
| [29] | Varshney, R. K., Bohra, A., Yu, J., et al. (2021). Designing future crops: Genomics-assisted breeding comes of age. Trends in Plant Science, 26(6), 631–649.
https://doi.org/10.1016/j.tplants.2021.03.010 |
[28, 29]
. Given the growing risks of climate change, pest outbreaks, and emerging diseases, integrating marker-assisted selection and genomic tools into local breeding programs would substantially improve breeding efficiency and speed. Furthermore, Ari and Basketo zones remain under-researched, particularly with respect to enset and root crop genetic improvement
| [18] | Reda, F., & Mohammed, A. (2020). Enset (Ensete ventricosum) genetic improvement: Challenges and opportunities in southern Ethiopia. African Journal of Agricultural Research, 15(8), 1108–1120. https://doi.org/10.5897/AJAR2020.14832 |
[18]
.
5. Conclusion
This systematic review synthesized evidence on plant breeding research conducted in the Ari, South Omo, Konso, and Basketo zones of southern Ethiopia. The findings reveal that breeding research in these areas is unevenly distributed, crop-focused, and largely dependent on conventional and participatory approaches. Sorghum and maize dominate breeding efforts, reflecting their importance as staple and climate-resilient crops in semi-arid and mid-altitude agroecologies. However, important indigenous crops such as enset and root and tuber crops remain under-researched, particularly in Ari and Basketo zones.
The review further indicates that breeding objectives are mainly centered on drought tolerance, early maturity, disease resistance, and yield improvement, which are critical traits under the prevailing climate variability in southern Ethiopia. Despite these efforts, the use of molecular breeding technologies remains very limited, and the integration of modern genomic tools into local breeding programs is still in its early stages. Moreover, fragmentation of research outputs across theses, reports, and unpublished studies has limited the accessibility and application of existing knowledge.
Overall, the study concludes that while plant breeding research in the four zones has contributed to identifying adapted varieties and improving crop productivity, significant gaps remain in technology integration, crop diversification, and region-specific breeding strategies.
6. Recommendations
Based on the findings of this review, the following recommendations are proposed:
1. Strengthen zone-specific breeding programs
Targeted breeding programs should be established for Ari, South Omo, Konso, and Basketo zones to address their unique agroecological constraints and crop priorities.
2. Enhance research on underutilized crops
Greater attention should be given to indigenous and neglected crops such as enset, taro, sweet potato, and local legumes, which are crucial for food security and resilience.
3. Integrate molecular breeding approaches
National and regional research institutions should promote the use of genomic tools, marker-assisted selection, and modern biotechnology to accelerate genetic gains.
4. Expand participatory breeding programs
Farmer participation should be strengthened to ensure that released varieties meet local preferences and increase adoption rates.
5. Improve documentation and knowledge integration
Research outputs from theses and institutional reports should be systematically archived and integrated into national breeding databases to improve accessibility.
6. Strengthen seed systems and variety dissemination
Improved coordination between research centers, extension services, and seed enterprises is needed to ensure timely delivery of improved varieties to farmers.
Abbreviations
AI | Artificial Insemination |
BMJ | British Medical Journal |
EIAR | Ethiopian Institute of Agricultural Research |
IDOSI | International Digital Organization for Scientific Information |
JARC | Jinka Agricultural Research Center |
MAS | Marker-Assisted Selection |
MSc | Master of Science |
PhD | Doctor of Philosophy |
PPB | Participatory Plant Breeding |
PRISMA | Preferred Reporting Items for Systematic Reviews and Meta-Analyses |
PVS | Participatory Varietal Selection |
SNNPR | Southern Nations, Nationalities, and Peoples’ Region |
SSR | Simple Sequence Repeat |
Acknowledgments
The authors would like to sincerely acknowledge all researchers, universities, and agricultural research institutions whose published and unpublished works contributed to this systematic review. Special appreciation is extended to academic staff and students who have conducted MSc and PhD research in the Ari, South Omo, Konso, and Basketo zones, whose efforts provided valuable data for synthesis. Finally, we appreciate the support of colleagues and reviewers who provided constructive feedback during the preparation of this manuscript.
Author Contributions
Daniel Abebe: Conceptualization, Data curation, Formal Analysis, Investigation, Methodology, Supervision, Visualization, Writing – original draft
Conflicts of Interest
The author declares no conflicts of interest.
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Cite This Article
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APA Style
Abebe, D. (2026). Plant Breeding Research in Ari, South Omo, Konso, and Basketo Zones: A Systematic Review. World Journal of Agricultural Science and Technology, 4(2), 27-34. https://doi.org/10.11648/j.wjast.20260402.12
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Abebe, D. Plant Breeding Research in Ari, South Omo, Konso, and Basketo Zones: A Systematic Review. World J. Agric. Sci. Technol. 2026, 4(2), 27-34. doi: 10.11648/j.wjast.20260402.12
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Abebe D. Plant Breeding Research in Ari, South Omo, Konso, and Basketo Zones: A Systematic Review. World J Agric Sci Technol. 2026;4(2):27-34. doi: 10.11648/j.wjast.20260402.12
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@article{10.11648/j.wjast.20260402.12,
author = {Daniel Abebe},
title = {Plant Breeding Research in Ari, South Omo, Konso, and Basketo Zones: A Systematic Review},
journal = {World Journal of Agricultural Science and Technology},
volume = {4},
number = {2},
pages = {27-34},
doi = {10.11648/j.wjast.20260402.12},
url = {https://doi.org/10.11648/j.wjast.20260402.12},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.wjast.20260402.12},
abstract = {Plant breeding research remains a cornerstone for sustainable agricultural development, particularly in ecologically diverse and climate-vulnerable regions. In southern Ethiopia, the Ari, South Omo, Konso, and Basketo zones represent distinct agroecological systems with diverse cropping patterns and production constraints. However, breeding research conducted in these zones remains fragmented and poorly synthesized. This systematic review aimed to assess the scope, trends, breeding approaches, target crops, and major research gaps in plant breeding studies undertaken in the four zones. The review followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) framework. Relevant literature published between 2000 and 2025 was retrieved from peer-reviewed journals, university repositories, institutional reports, and conference proceedings. Only studies conducted in, or explicitly reporting results from, the Ari, South Omo, Konso, and Basketo zones were included. A total of 48 studies met the inclusion criteria. total of 48 studies met the inclusion criteria, with most studies conducted in South Omo and Konso zones, while comparatively fewer studies were reported from Ari and Basketo zones, indicating uneven research coverage across the study area. Results revealed that sorghum, maize, enset, finger millet, cowpea, and root crops received the greatest research attention among breeding studies conducted in the four zones. The primary breeding objectives included drought tolerance, disease resistance, yield enhancement, early maturity, and farmer-preferred traits. Conventional and participatory breeding methods were the most commonly employed approaches, accounting for approximately 85–90% of the reviewed studies, whereas molecular breeding approaches were reported in only 4.2% of studies. Significant knowledge gaps were observed in Basketo and Ari zones, particularly due to the limited number of breeding studies available, making it difficult to draw comprehensive conclusions regarding germplasm improvement, variety development, and breeding approaches in these areas. The review highlights the urgent need for integrated breeding programs, enhanced seed system development, and greater application of molecular breeding tools to strengthen food security and climate resilience in southern Ethiopia.},
year = {2026}
}
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TY - JOUR
T1 - Plant Breeding Research in Ari, South Omo, Konso, and Basketo Zones: A Systematic Review
AU - Daniel Abebe
Y1 - 2026/06/25
PY - 2026
N1 - https://doi.org/10.11648/j.wjast.20260402.12
DO - 10.11648/j.wjast.20260402.12
T2 - World Journal of Agricultural Science and Technology
JF - World Journal of Agricultural Science and Technology
JO - World Journal of Agricultural Science and Technology
SP - 27
EP - 34
PB - Science Publishing Group
SN - 2994-7332
UR - https://doi.org/10.11648/j.wjast.20260402.12
AB - Plant breeding research remains a cornerstone for sustainable agricultural development, particularly in ecologically diverse and climate-vulnerable regions. In southern Ethiopia, the Ari, South Omo, Konso, and Basketo zones represent distinct agroecological systems with diverse cropping patterns and production constraints. However, breeding research conducted in these zones remains fragmented and poorly synthesized. This systematic review aimed to assess the scope, trends, breeding approaches, target crops, and major research gaps in plant breeding studies undertaken in the four zones. The review followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) framework. Relevant literature published between 2000 and 2025 was retrieved from peer-reviewed journals, university repositories, institutional reports, and conference proceedings. Only studies conducted in, or explicitly reporting results from, the Ari, South Omo, Konso, and Basketo zones were included. A total of 48 studies met the inclusion criteria. total of 48 studies met the inclusion criteria, with most studies conducted in South Omo and Konso zones, while comparatively fewer studies were reported from Ari and Basketo zones, indicating uneven research coverage across the study area. Results revealed that sorghum, maize, enset, finger millet, cowpea, and root crops received the greatest research attention among breeding studies conducted in the four zones. The primary breeding objectives included drought tolerance, disease resistance, yield enhancement, early maturity, and farmer-preferred traits. Conventional and participatory breeding methods were the most commonly employed approaches, accounting for approximately 85–90% of the reviewed studies, whereas molecular breeding approaches were reported in only 4.2% of studies. Significant knowledge gaps were observed in Basketo and Ari zones, particularly due to the limited number of breeding studies available, making it difficult to draw comprehensive conclusions regarding germplasm improvement, variety development, and breeding approaches in these areas. The review highlights the urgent need for integrated breeding programs, enhanced seed system development, and greater application of molecular breeding tools to strengthen food security and climate resilience in southern Ethiopia.
VL - 4
IS - 2
ER -
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