棉花植株形态学性状遗传网络的关联分析（英文）  

Association mapping of genetic network for plant morphological traits in cotton

作　　者：梅拥军[1] 余霁雯 薛昂立 范术丽[2] 宋美珍[2] 庞朝友[2] 裴文锋[2] 喻树迅[2] 朱军[3] 

机构地区：[1]塔里木大学植物科学学院,新疆阿拉尔843300 [2]中国农业科学院棉花研究所,棉花生物学国家重点实验室/农业部棉花生物学与遗传育种重点实验室,河南安阳455000 [3]浙江大学农业与生物技术学院,浙江省作物种质资源重点实验室,杭州310058

出　　处：《浙江大学学报（农业与生命科学版）》2016年第2期127-136,共10页Journal of Zhejiang University:Agriculture and Life Sciences

基　　金：supported by the National High Technology Research and Development Program of China(No.2009AA101104);the National Science Foundation of China(No.31371250);the National Basic Research Program of China(No.2011CB109306);the National Cotton Industry Technology System(No.CARS-18);the Scientific Research Program of the Higher Education Institution of Xinjiang,China(No.XJEdu 2006I59)

摘　　要：棉花形态性状对于棉株营养生长至关重要,同时,对其生殖生长也有着关键影响。该研究对来源于3个不同种植环境下的39个陆地棉品种材料及其178个F1组合的株高、茎秆粗、第一果节数和果枝数的遗传结构进行了剖析。关联分析采用基于混合线性模型的统计方法,剖析的遗传效应包括加性效应、显性效应、上位性效应及其与环境的互作效应。结果共检测到25个数量性状SSR（simple sequence repeat,简单重复序列）位点与这4个形态学性状显著相关,总遗传率达到63.08%～78.28%;加性、显性及其与环境的互作效应是棉花形态性状遗传的重要遗传资源,直接选择显著的SSR位点可优化棉株的形态性状。Morphological traits played an important role in vegetative growth of cotton（Gossypium hirsutum L.）,and also had an critical impact on reproductive growth.In this study,we dissected the genetic architecture of four morphological traits,including plant height（PLH）,stem diameter（STD）,stem first（STF）and stem node（STN）.Thirty-nine lines and their 178F1 hybrids of upland cotton grown in three environments were used for association mapping.The association mapping was conducted using mixed linear model approaches for analyzing full genetic model with genetic effects of additive,dominance,epistasis and their environment interaction.The results showed that 25 highly significant quantitative trait SSRs（QTSs）were detected and their total heritability was high for the four morphological traits studied（h2G＋GE ≈63.08%-78.28%）.It was revealed that additive,dominance and their environment interaction effects were important genetic recourses for morphological traits in cotton.This research provides new insights into cotton quantitative genetics and molecular breeding.

关 键 词：棉花 关联分析 形态性状 上位性 简单重复序列标记 

分 类 号：Q348[生物学—遗传学]