控制水稻株高的QTL定位及环境互作分析  

QTL Mapping and Gene × Environment Interaction Analysis of the Height of Plant in Rice(Oryza sativa L.)

作　　者：贾小丽[1,2] 林文雄[2] 

机构地区：[1]武夷学院,福建武夷山353000 [2]福建农林大学农业生态研究所,福州350002

出　　处：《中国农学通报》2011年第21期18-21,共4页Chinese Agricultural Science Bulletin

基　　金：国家自然科学基金项目"强优势杂交稻及其亲本基因差异表达的规律与机制研究"(30741028);"不同供氮条件下水稻强弱势粒灌浆的分子机理研究"(30871494);教育部博士点基金项目"水稻强弱势粒灌浆差异的分子生态学研究"(200803890006)

摘　　要：利用由小穗小粒型品种‘密阳46’和大穗大粒型品种FJCD建立的一个包含130个家系F10的重组自交系群体,分别在武夷山和莆田环境下测定其株高,进行QTL定位及环境互作分析。武夷山环境下检测到2个加性QTL,位于1、2号染色体上,其中qPH-2-5解释了26.2%的表型变异;莆田环境下检测到4个加性QTL,分别位于2、2、2、6号染色体上,共解释了20.61%的表型变异。经过GE互作分析,2个背景QTL存在显著的加性×环境互作效应,共解释了17.36%的表型变异。此研究一定程度上揭示了株高的数量遗传规律,同时为株高分子育种提供依据。Mapping of quantitative trait loci（QTL） and gene × environment interaction were used to research the height of plant from a RIL（recombinant inbred lines） including 130 lines deriving from Milyang 46 and FJCD.This research carried in Wuyishan and Putian.In Wuyishan,two additive QTLs were located on chromosome 1 、 2,in which qPH-2-5 explained 26.2% of the phenotypic variation;in Putian,four additive QTLs were detected,located on chromosome 2 、 2 、 2 、 6,and explained 20.61% of the phenotypic variation.After GE interaction analysis,two background QTLs had significant additive × environment interaction effects and explained 17.36% of the phenotypic variation.This study reveals the law of quantitative genetics on the height of plant in a way,and provides basis for molecular breeding.

关 键 词：QTL定位 水稻 重组自交系 株高 环境互作 

分 类 号：Q75[生物学—分子生物学]