早熟恢复系DR02生育期特性的遗传分析  

Inheritance of a Growth Characteristic of Precocious Restorer Rice Line,DR02

作　　者：林成豹 黄显波 唐江霞 邓则勤 梁水金 

机构地区：[1]福建省三明市农业科学研究院,福建沙县365051

出　　处：《福建农业学报》2017年第5期495-497,共3页Fujian Journal of Agricultural Sciences

基　　金：福建省再生稻产业重大农技推广服务试点项目子课题(KNJ156001);福建省星火计划重点项目(2016S0034);三明市科技计划项目(2015-N-3)

摘　　要：水稻DR02来源于T251与02K511的杂交后代,具有显性早熟特性。以DR02分别与明恢86、明恢63等6个不同类型的中、迟熟水稻品种杂交后代进行遗传性分析。结果显示,各组合F1的抽穗期均比中亲值早,DR02与双抗明占和9311的杂交F_2的抽穗期呈双峰分布,与其他4个亲本的F_2抽穗期呈单峰分布,用中亲值进行分组,经χ~2测验,仅DR02与粤晶丝苗2号和双抗明占组合的F_2代分离比符合3∶1,其他组合均表现显著与极显著差异,不符合预期理论比。综合上述分析结果表明水稻材料DR02的早熟性可能是由1个比较大效应的主效QTL控制的。A dominant early maturing trait was identified in DR02 rice bred from T251 and 02K511. Heading dates of the hybrid progenies from DR02 crossed with 6 medium or late maturing varieties, including Minghui 86 and Minghui 63, were analyzed to study the inheritance of the growth characteristic. It was found that the heading dates of F1 progenies were earlier than those of their mid-parents. The heading dates of F2 populations from DR02 crossed with Shuangkangmingzhan and 9311 had twin peaks, while those of F2 from DR02 crossed with the other 4 parents exhibited a unimodal distribution with closely clustered values. The segregation ratio between the early heading and the late heading plants was 3 ： 1 for the F2 population of DR02 crossed with Yuejingsimiao 2 and Shuangkangmingzhan, while those of other combinations were significantly and extremely significantly different. It suggested that the early maturing trait of DR02 could be largely controlled by a single relatively dominant QTL.

关 键 词：水稻 早熟性 恢复系DR02 

分 类 号：S511[农业科学—作物学]