Identification of salt tolerance‐improving quantitative trait loci alleles from a salt‐susceptible rice breeding line by introgression breeding

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dc.creatorQiu, Xianjin
dc.creatorYuan, Zhihua
dc.creatorLiu, Huan
dc.creatorXiang, Xiaojiao
dc.creatorYang, Longwei
dc.creatorHe, Wenjing
dc.creatorDu, Bin
dc.creatorYe, Guoyou
dc.creatorXu, Jianlong
dc.creatorXing, Danying
dc.date2015-12
dc.date2024-12-19T12:54:59Z
dc.date2024-12-19T12:54:59Z
dc.date.accessioned2026-06-27T04:10:13Z
dc.descriptionTo improve salt tolerance of two elite rice varieties, Ce258 and Zhongguangxiang1 (ZGX1), two sets of introgression lines (ILs) each comprising 200 BC1F10lines derived from a common donor, IR75862, and two recipient parents, Ce258 and ZGX1, were used for mapping of QTLs for four salt tolerance‐related traits at the seedling stage. Although the three parents were susceptible to salt, the two IL populations showed transgressive segregations for salt tolerance with 12 and 8 salt tolerance ILs in the Ce258‐ILs and ZGX1‐ILs. Eighteen main‐effect QTLs were identified for the four traits in the two IL populations, and the IR75862 alleles at most loci showed increased and decreased salt tolerance in the ZGX1 and Ce258 backgrounds, suggesting overwhelming genetic background effects on QTL detection for salt tolerance. TheqDSS11simultaneously detected in the two backgrounds was validated in a F2population derived from a salt tolerance line and ZGX1. Our results indicated that salt tolerance‐enhancing allele could be identified in the elite susceptible breeding lines and that introgression of the favourable alleles could facilitate the development of superior lines with greater salt tolerance levels.
dc.identifierhttps://hdl.handle.net/10568/165375
dc.identifier.urihttp://hdl.handle.net/123456789/23828
dc.languageen
dc.publisherWiley
dc.sourceQiu, Xianjin; Yuan, Zhihua; Liu, Huan; Xiang, Xiaojiao; Yang, Longwei; He, Wenjing; Du, Bin; Ye, Guoyou; Xu, Jianlong and Xing, Danying. 2015. Identification of salt tolerance‐improving quantitative trait loci alleles from a salt‐susceptible rice breeding line by introgression breeding. Plant Breeding, Volume 134 no. 6 p. 653-660
dc.subjectalleles
dc.subjectintrogression lines
dc.subjectquantitative trait loci
dc.subjectquantitative traits
dc.subjectsalt tolerance
dc.subjectseedlings
dc.subjectvarieties
dc.titleIdentification of salt tolerance‐improving quantitative trait loci alleles from a salt‐susceptible rice breeding line by introgression breeding
dc.typeJournal Article

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Instituto Internacional de Investigación del Arroz (IRRI)