Detection of quantitative trait loci (QTLs) for seedling traits and drought tolerance in wheat using three related recombinant inbred line (RIL) populations

作者：Zhang, Hong; Cui, Fa; Wang, Honggang^*

来源：Euphytica, 2014, 196(3): 313-330.

DOI：10.1007/s10681-013-1035-7

• Triticum aestivum
• Mapping population
• Unconditional and conditional QTL analysis

In order to detect quantitative trait loci (QTLs) for drought tolerance in wheat during seed germination conditional and unconditional QTL analyses of eight seedling traits were conducted under two water regimes using three related F-9 recombinant inbred line populations with a common female parent. A total of 87 QTLs for the eight seedlings traits and 34 specific QTLs related to drought tolerance were detected. Seventy-one of these QTLs were major QTLs with contributions to phenotypic variance of > 10 %. Of the 34 QTLs related to drought tolerance only eight were also detected by unconditional analysis of seedling traits under osmotic stress conditions indicating that most of the QTLs related to drought tolerance could not be detected by unconditional QTL analysis. Therefore, conditional QTL analysis of stress-tolerance traits such as drought tolerance was feasible and effective. Of 11 important QTL clusters located on chromosomes 1BL, 1D, 2A, 2B, 2D, 4A, 6B, and 7B, nine were detected in multiple populations and eight were detected by both unconditional and conditional analyses.

• 出版日期2014-4
• 单位山东农业大学; 德州学院; 中国科学院遗传与发育生物学研究所农业资源研究中心; 中国科学院遗传与发育生物学研究所