作物学报2016，Vol.42Issue(12)：1764-1778,15.DOI:10.3724/SP.J.1006.2016.01764
小麦燕大1817×北农6号重组自交系群体在正常和盐胁迫水培条件下苗期性状的QTL定位
Mapping QTLs for Wheat Seedling Traits in RILs Population of Yanda 1817 × Beinong 6 under Normal and Salt-Stress Conditions
摘要
Abstract
Seedling traits are known to be important indicators of salt tolerance in wheat (Triticum aestivum L.). Quantitative trait loci (QTLs) mapping for wheat seedling traits under salt stress and normal hydroponics conditions were conducted at three times during 2013 using a set of 230 recombinant inbred lines (RILs) derived from a cross of Yanda 1817 × Beinong 6 and an available high-density integrated SSR and SNP genetic linkage map. A total of 69 putative QTLs associated with seven seedling traits were detected on 20 chromosomes except for 1A by inclusive composite interval mapping (ICIM) at LOD≥ 2.5. A single QTL ex-plained 2.70–19.00% of the phenotypic variation. Of which, 46 QTLs showed additive effects originated from Yanda 1817, whereas 23 QTLs showed additive effects derived from Beinong 6, indicating that the founder parent Yanda 1817 is an important genetic resource for salt tolerance in wheat. Twelve QTLs are considered to be stable QTLs because they were detected in at least three environments, including the major QTLQTn.cau-7BS.1 for tiller number and the salt-induced QTLQRn.cau-2A for root number, both originating from Yanda 1817. These results may explain the genetic bases of luxuriant growing habit and stress tol-erance of Yanda 1817.关键词
小麦/重组自交系/苗期/耐盐/数量性状位点Key words
Wheat/RIL/Seedling/Salt tolerance/QTL引用本文复制引用
周升辉,张德云,王令,王丽丽,张艳,梁荣奇,韩俊,刘志勇,吴秋红,谢菁忠,陈娇娇,陈永兴,傅琳,王国鑫,于美华,王振忠..小麦燕大1817×北农6号重组自交系群体在正常和盐胁迫水培条件下苗期性状的QTL定位[J].作物学报,2016,42(12):1764-1778,15.基金项目
本研究由国家自然科学基金项目(31301312,31271710)资助。This study was supported by the National Natural Science Foundation of China (31301312,31271710) （31301312,31271710）
