QTL Mapping for Plant Height of Wheat under Different Irrigation Modes

查看全文 作　　者：Yanyun [1]REN;Ling [1]HUANG;Minmin [1]SHAO;Leiming [1]SUN;Kai [1]ZHAO;Jinping [1]WANG;Xingke [1]XU;Weiying [1]FENG;Jifeng [1]WANG;Lu [1]YAN;Shichong [2]WANG;Lin [1]WANG

机构地区：[1]Jining Academy of Agricultural Sciences, Jining 272031, China;[2]Tianjin Institute of Hematology, Tianjin 300000, China

出　　处：《Agricultural Biotechnology》索引2017年第6卷第4期,共6页

基　　金：Supported by Scientific and Technological Development Plan of Jining Municipal Government(2013CB030102);Key Technological Project for Independent Innovation of Shandong Province(2014GJJS0201) 摘　　要：In order to mine gene loci associated with drought resistance and water use efficiency,and provide guidance for the breeding of drought-resistant wheat varieties,quantitative trait loci(QTLs)for plant height(PH)and stem height(SH)of wheat were evaluated using a population of 302 recombinant inbred lines(RILs)derived from a cross between drought-tolerant cultivar Luohan 2 and water-sensitive cultivar Weimai 8 under different water regimes in six environments.Totally 17 additive QTLs for PH and SH were identified and distributed on chromosomes 2B,3A,3B,4A,5A,5D,6B,7A and 7B,respectively,which explained3.3%to 26.95%phenotypic variations,with additive effect of 1.919 6 to 5.382 8 cm.Among them,14 QTLs,24 times and 5 QTLs,7 times were detected in three irrigation environments and three drought stress environments,respectively.Both the number of QTLs for PH and the times detected in drought stress environments were significantly less than those in irrigation environments.Of all the 17 QTLs for PH,12 were detected only in irrigation environment,three QTLs were detected only in drought stress environment,and two QTLs were detected in both environments,suggesting that the expression of the genes is greatly influenced by environmental condition.QPh-WL-7A.3 detected between maker Xbarc049 and Xgwm273 on chromosome 7A in all the three drought stress environments,can enhance2.481 5-3.697 2 cm of PH,explain 8.6%-10.0%additive effect,so it is useful for the genetic improvement of drought tolerance and molecular marker-assisted selection in wheat. 关键词：QTL定位小麦株高灌溉方式分子标记辅助选择水分利用效率胁迫环境环境检测数量性状位点

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QTL Mapping for Plant Height of Wheat under Different Irrigation Modes

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