2024-03-29T12:24:54Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:02001879
2023-01-16T04:28:28Z
886:887:888:2421
Evaluation of a Newly Identified Mutation Gene that Promotes Root Elongation for Improvement of Drought Avoidance in Rice
Hasegawa, Tomomi
Shibata, Akihide
Wainaina, Cornelius Mbathi
Makihara, Daigo
Samejima, Hiroaki
Kikuta, Mayumi
Menge, Daniel Makori
Kimani, John Munji
Yamauchi, Akira
Inukai, Yoshiaki
open access
Kenya
rice
root system
drought
water saving technology
Drought is one of the most serious abiotic stresses for rice cultivation, even under a water saving production system such as the Alternate Wetting and Drying (AWD) system and upland irrigated fields. In this study, we evaluated the performance of larger root systems in a KM07 mutant under such water management conditions. This mutant line was utilized for breeding and development of new rice germplasm adaptable to drought stress conditions in Mwea, Kenya, by crossing it with the recurrent parent of New Rice for Africa (NERICA), WAB56-104. Three mutant-type F6 lines grown under AWD and upland irrigated conditions showed different responses to drought stress. The mutant type’s greater root growth was observed in lines 2 and 3 under AWD and upland irrigation conditions, respectively. These results suggest that the highly developed root system derived from the KM07 mutant can avoid drought stress under field conditions in Kenya, and it should be utilized as breeding material for drought stress avoidance, along with water management technology.
名古屋大学農学国際教育協力研究センター
2019-03
eng
departmental bulletin paper
VoR
http://hdl.handle.net/2237/0002001879
https://nagoya.repo.nii.ac.jp/records/2001879
https://doi.org/10.50907/jicad.17.0_34
1347-5096
農学国際協力
17
34
40
https://nagoya.repo.nii.ac.jp/record/2001879/files/06_Vol17_34-40_07_FieldReport.pdf
application/pdf
1.5 MB
2022-01-07