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Research Article |

New Climate Resilience Rice Varieties for Coping with Climate Change HomThadokKham 17 (HTDK 17)

Rainfed rice cultivation dominates in Laos, covering an estimated 88% of the total area. This reliance on rainwater renders all production and planting activities vulnerable to unpredictable natural disasters, such as floods and droughts, that can strike at any point during the growing season. Such events can devastate rice production, leading to losses of up to 20% of the total domestic output. Moreover, climate change has further exacerbated challenges faced by rainfed rice farming in Lao PDR. To address these issues, a research project aimed at developing rice varieties adapted to changing environmental conditions was initiated in 1993. The project employed a hybridization approach, utilizing TDK8 (a high-yielding variety with broad environmental adaptability) and RGD10033-77-MAS-22 (a aromatic variety tolerant to flooding, drought and blast disease). In 2019, a promising aromatic line, RGD13300-88-1-1-MAS-5-MAS-TDK-1-B, emerged from the research efforts. This line exhibits tolerance to flooding for 14 to 20 days and demonstrates good resistance to leaf blight and neck blast. Throughout 2021, production tests were conducted in four provinces: Luangnamtha, Vientiane Capital, Savannakhet, and Champasak. The new variety, named HTDK17, delivered superior yields compared to both parental lines and local varieties, achieving an average of 3,974 kg/ha, representing a 3% increase. HTDK17 exhibits a maturity date of 130 to 135 days and is insensitive to photoperiod. To facilitate the dissemination of this new variety to farmers, seed of this variety has produced 11,000 kg of seed during the dry season of 2022-2023. This seed was distributed to 1,100 farmers acroses the four aforementioned provinces.

Climate Change, Submergence Tolerance, Production Loss, Aromatic Rice Variety, Flood Torelance, Drought Tolerance

APA Style

Xangsayasane, P., Homsengchan, L., Mani, V., Chanchanuvong, P., Voradet, S., et al. (2024). New Climate Resilience Rice Varieties for Coping with Climate Change HomThadokKham 17 (HTDK 17). International Journal of Agricultural Economics, 9(1), 30-35. https://doi.org/10.11648/ijae.20240901.14

ACS Style

Xangsayasane, P.; Homsengchan, L.; Mani, V.; Chanchanuvong, P.; Voradet, S., et al. New Climate Resilience Rice Varieties for Coping with Climate Change HomThadokKham 17 (HTDK 17). Int. J. Agric. Econ. 2024, 9(1), 30-35. doi: 10.11648/ijae.20240901.14

AMA Style

Xangsayasane P, Homsengchan L, Mani V, Chanchanuvong P, Voradet S, et al. New Climate Resilience Rice Varieties for Coping with Climate Change HomThadokKham 17 (HTDK 17). Int J Agric Econ. 2024;9(1):30-35. doi: 10.11648/ijae.20240901.14

Copyright © 2024 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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