Identification of salt-tolerant QTLs with strong genetic background effect using two sets of reciprocal introgression lines in rice

Vista sencilla de ítem
dc.creatorCheng, Lirui
dc.creatorWang, Yun
dc.creatorMeng, Lijun
dc.creatorHu, Xia
dc.creatorCui, Yanru
dc.creatorSun, Yong
dc.creatorZhu, Ling-Hua
dc.creatorAli, Jauhar
dc.creatorXu, Jianlong
dc.creatorLi, Zhikang
dc.date2012-01
dc.date2024-12-19T12:55:31Z
dc.date2024-12-19T12:55:31Z
dc.date.accessioned2026-06-27T04:09:33Z
dc.descriptionEffect of genetic background on detection of quantitative trait locus (QTL) governing salinity tolerance (ST) was studied using two sets of reciprocal introgression lines (ILs) derived from a cross between a moderately salinity tolerant japonica variety, Xiushui09 from China, and a drought tolerant but salinity susceptible indica breeding line, IR2061–520–6-9 from the Philippines. Salt toxicity symptoms (SST) on leaves, days to seedling survival (DSS), and sodium and potassium uptake by shoots were measured under salinity stress of 140 mmol/L of NaCl. A total of 47 QTLs, including 26 main-effect QTLs (M-QTLs) and 21 epistatic QTLs (E-QTLs), were identified from the two sets of reciprocal ILs. Among the 26 M-QTLs, only four (15.4%) were shared in the reciprocal backgrounds while no shared E-QTLs were detected, indicating that ST QTLs, especially E-QTLs, were very specific to the genetic background. Further, 78.6% of the M-QTLs for SST and DSS identified in the reciprocal ILs were also detected in the recombinant inbred lines (RILs) from the same cross, which clearly brings out the background effect on ST QTL detection and its utilization in ST breeding. The detection of ILs with various levels of pyramiding of nonallelic M-QTL alleles for ST from Xiushui09 into IR2061-520-6-9 allowed us to further improve the ST in rice.
dc.identifierhttps://hdl.handle.net/10568/165820
dc.identifier.urihttp://hdl.handle.net/123456789/23448
dc.languageen
dc.publisherCanadian Science Publishing
dc.sourceCheng, Lirui; Wang, Yun; Meng, Lijun; Hu, Xia; Cui, Yanru; Sun, Yong; Zhu, Linghua; Ali, Jauhar; Xu, Jianlong and Li, Zhikang. 2012. Identification of salt-tolerant QTLs with strong genetic background effect using two sets of reciprocal introgression lines in rice. Genome, Volume 55 no. 1 p. 45-55
dc.subjectalleles
dc.subjectdrought
dc.subjectdrought resistance
dc.subjectdrought stress
dc.subjectgene interaction
dc.subjectinbred lines
dc.subjectintrogression
dc.subjectleaves
dc.subjectnutrient uptake
dc.subjectplant nutrition
dc.subjectpotassium
dc.subjectquantitative trait loci
dc.subjectsalinity
dc.subjectsalt tolerance
dc.subjectseedlings
dc.subjectsodium
dc.subjectsodium chloride
dc.titleIdentification of salt-tolerant QTLs with strong genetic background effect using two sets of reciprocal introgression lines in rice
dc.typeJournal Article

Archivos

Colecciones

Instituto Internacional de Investigación del Arroz (IRRI)