河南农业科学Issue(4)：14-20,7.DOI:10.15933/j.cnki.1004-3268.2015.04.004
中国冬小麦微核心种质遗传多样性分析
Genetic Diversity of Micro-core Collections of Chinese Winter Wheat
摘要
Abstract
In order to know the genetic diversity of Chinese winter wheat,and to provide useful informa-tion for wheat breeding,90 typical accessions of Chinese winter wheat were selected as research materials, which were planted in normal and drought conditions for two years. The genetic variations and broad sense heritability of 21 wheat traits were analyzed. The results showed that 16 traits had abundant genetic varia-tions(CVg > 10% ) except 5 traits( SL,SN,Pn,Ci and SPAD; CVg < 10% ); the simple traits mainly composed of morphological traits(SDL,UIL,PH,CL,RD,TKW,SL,SPAD,GNPS,SN,RL and FLL) had relatively higher heritability,which were available to be selected in early generations. The yield traits(BY-PP and GYPP) had medium heritability,which were considered to be reliable indexes in early generations as they were the core goal in wheat breeding. Photosynthetic and other complex traits(Pn,E,Gs,Ci,RS and RV) were of low heritability,especially the photosynthetic traits which were easily influenced by the environment and could not be evaluated accurately,thus they were unsuitable to be selected in early gen-erations. All the 90 wheat accessions were analyzed with 269 SSR markers distributing throughout the wheat genome. The result showed that the genetic diversity of the Chinese winter wheat accessions was at a lower level. Significant difference of genetic diversity was observed among the three genomes,of which the B genome showed the highest diversity and the D the lowest.关键词
中国冬小麦/种质/遗传变异/遗传力/SSR 标记/遗传多样性Key words
Chinese winter wheat/germplasm/genetic variation/broad sense heritability/SSR marker/genetic diversity分类
农业科技引用本文复制引用
陈晓杰,张建伟,杨保安,范家霖,张福彦,程仲杰,胡银岗..中国冬小麦微核心种质遗传多样性分析[J].河南农业科学,2015,(4):14-20,7.基金项目
河南省小麦产业体系项目(Z2010-01-04) （Z2010-01-04）
农业部公益性行业(农业)科研专项(201103007) （农业）
郑州市重大科技攻关项目(121PZDGG071) （121PZDGG071）
旱区作物逆境生物学国家重点实验室开放课题(CSBAA2014008) （CSBAA2014008）
