Development of a temperate climate-adapted indica multi-stress tolerant rice variety by pyramiding quantitative trait loci

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dc.creatorShin, Na-Hyun
dc.creatorHan, Jae-Hyuk
dc.creatorVo, Kieu Thi Xuan
dc.creatorSeo, Jeonghwan
dc.creatorNavea, Ian Paul
dc.creatorYoo, Soo-Cheul
dc.creatorJeon, Jong-Seong
dc.creatorChin, Joong Hyoun
dc.date2022-12
dc.date2024-12-19T12:53:27Z
dc.date2024-12-19T12:53:27Z
dc.date.accessioned2026-06-27T04:14:34Z
dc.descriptionSuccessful cultivation of rice (Oryza sativa L.) in many Asian countries requires submergence stress tolerance at the germination and early establishment stages. Two quantitative trait loci, Sub1 (conferring submergence tolerance) and AG1 (conferring anaerobic germination), were recently pyramided into a single genetic background, without compromising any desirable agronomic traits, leading to the development of Ciherang-Sub1 + AG1 (CSA). However, little research has been conducted to enhance plant tolerance to abiotic stress (submergence) and biotic stress (rice blast), which occur in a damp climate following flooding. The BC2F5 breeding line was phenotypically characterized using the AvrPi9 isolate. The biotic and abiotic stress tolerance of selected lines was tested under submergence stress and anaerobic germination conditions, and lines tolerant to each stress condition were identified through phenotypic and gene expression analyses. The Ciherang-Sub1 + AG1 + Pi9 (CSA-Pi9) line showed similar agronomic performance to its recurrent parent, CSA, but had significantly reduced chalkiness in field trials conducted in temperate regions. Unexpectedly, the CSA-Pi9 line also showed salinity tolerance. Thus, the breeding line newly developed in this study, CSA-Pi9, functioned under stress conditions, in which Sub1, AG1, and Pi9 play a role and had superior grain quality traits compared to its recurrent parent in temperate regions. We speculate that CSA-Pi9 will enable the establishment of climate-resilient rice cropping systems, particularly in East Asia.
dc.identifierhttps://hdl.handle.net/10568/164085
dc.identifier.urihttp://hdl.handle.net/123456789/26287
dc.languageen
dc.publisherSpringer
dc.rightsOpen Access
dc.sourceShin, Na-Hyun; Han, Jae-Hyuk; Vo, Kieu Thi Xuan; Seo, Jeonghwan; Navea, Ian Paul; Yoo, Soo-Cheul; Jeon, Jong-Seong and Chin, Joong Hyoun. 2022. Development of a temperate climate-adapted indica multi-stress tolerant rice variety by pyramiding quantitative trait loci. Rice, Volume 15, no. 1
dc.subjectplant science
dc.subjectsoil science
dc.subjectagronomy and crop science
dc.titleDevelopment of a temperate climate-adapted indica multi-stress tolerant rice variety by pyramiding quantitative trait loci
dc.typeJournal Article

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