Identification of QTLs for Yield-Related Traits in the Recombinant Inbred Line Population Derived from the Cross Between a Synthetic Hexaploid Wheat-Derived Variety Chuanmai 42 and a Chinese Elite Variety Chuannong 16

作     者：TANG Yong-lu LI Jun WU Yuan-qi WEI Hui-ting LI Chao-SU YANG Wu-yun CHEN Fang 

作者机构：Crop Research Institute Sichuan Academy of Agricultural Sciences Chengdu 610066 P.R.China College of Life Sciences Sichuan University Chengdu 610064 P.R.China Agronomy College Sichuan Agricultural University Ya ＇an 625014 P.R. China 

出 版 物：《Agricultural Sciences in China》 (中国农业科学（英文版）)

年 卷 期：2011年第10卷第11期

页      面：1665-1680页

核心收录：

学科分类：09[农学] 0901[农学-作物学] 0902[农学-园艺学] 090201[农学-果树学] 

基　　金：supported by the Sichuan Provincial Youth Foundation,China (09ZQ026-086) the earmarked fund for Modern Agro-Industry Technology Research System,China (nycytx-03) the National 863 Program of China (2006AA10Z1C6) the National Natural Science Foundation of China (30771338 and30871532) 

主　　题：yield-related traits quantitative trait loci Chuanmai 42 synthetic hexaploid wheat 

摘      要：Synthetic hexaploid wheat （SHW） represents a valuable source of new resistances to a range of biotic and abiotic stresses. A recombinant inbred line （RIL） population with 127 recombinant inbred lines derived from a SHW-derived variety Chuanmai 42 crossing with a Chinese spring wheat variety Chuannong 16 was used to map QTLs for agronomic traits including grain yield, grains per square meter, thousand-kernel weight, spikes per square meter, grain number per spike, grains weight per spike, and biomass yield. The population was genotyped using 184 simple-sequence repeat （SSR） markers and 34 sequence-related amplified polymorphism （SRAP） markers. Of 76 QTLs （LOD〉2.5） identified, 42 were found to have a positive effect from Chuanmai 42. The QTL ***-4D.2 associated with grain yield on chromosome 4D was detected in four of the six environments and the combined analysis, and the mean yield, across six environments, of individuals carrying the Chuanmai 42 allele at this locus was 8.9% higher than that of those lines carrying the Chuannong 16 allele. Seven clusters of the yield-coincident QTLs were detected on 1A, 4A, 3B, 5B, 4D, and 7D.