人工合成小麦CI-LD抗穗发芽遗传特性分析  

Genetic Analysis of Pre-harvest Sprouting Resistance in Synthetic Wheat CI-LD

作　　者：郑建敏[1] 蒲宗君[1] 李式昭[1] 李俊[1] 杨恩年[1] 

机构地区：[1]四川省农业科学院作物研究所农业部西南地区小麦生物学与遗传育种重点实验室,四川成都610066

出　　处：《麦类作物学报》2015年第4期464-470,共7页Journal of Triticeae Crops

基　　金：四川省农业科学院优秀论文基金项目;四川省财政基因工程专项;四川省杰出青年基金项目(2012JQ0066);国家863强优势小麦杂交种的创制与应用项目(2011AA10A106);十二五国家支撑计划项目(2011BAD35B03);四川省青年科技创新研究团队项目(2014TD0014);现代产业链关键技术创新研究与应用项目(2014NZ0055)

摘　　要：CI-LD是一份源自硬粒小麦-节节麦的人工合成小麦,其穗发芽抗性好且表现稳定。为了给CI-LD的进一步利用提供参考依据,本研究利用主基因+多基因遗传模型对易穗发芽品种川麦44与CILD构建的F1、F2群体和亲本进行联合世代分析和单世代分析,初步明确CI-LD穗发芽抗性主要受2对主基因调控,显性效应明显,同时存在多基因参与调控其抗性表达。Pre-harvest sprouting（PHS）is a serious problem in wheat production.Studies on exploration and utilization of new stable resistance genetic resources will be good for improving pre-harvest sprouting resistance in wheat.CI-LD is a synthetic wheat variety which naturally fall into the field at the former harvest season,and grow naturally at the next season.It represented fine resistance to pre-harvest sprouting for years.In this research,F1 and F2populations were constructed by crossing apre-harvest sprouting cultivar Chuanmai 44 and CI-LD.Genetic analysis of pre-harvest sprouting resistance in CI-LD was conducted with the major gene and polygene genetic model.The results preliminary indicated that pre-harvest sprouting resistance is mainly controlled by 2 major genes,while multiple genes are also involved in the regulation of the resistance;the dominant effect of the major genes is obvious.

关 键 词：小麦 抗穗发芽 主基因+多基因 CI—LD 

分 类 号：S512.1[农业科学—作物学] S330