盐粳188空间诱变后代性状变异分析  

Morphologic Variation Analysis on Aeronautical Mutagenic Progenies of Yanjing 188

作　　者：赵一洲[1] 倪善君[1] 张战[1] 李鑫[1] 毛艇[1] 张丽丽[1] 刘研[1] 刘福才[1] 

机构地区：[1]辽宁省盐碱地利用研究所,辽宁盘锦124010

出　　处：《核农学报》2016年第9期1672-1678,共7页Journal of Nuclear Agricultural Sciences

基　　金：辽宁省科学事业公益研究基金项目(GY2014-B-012);辽宁省重大科技攻关计划项目(2014201004)

摘　　要：为研究粳稻品种空间诱变后代的变异特点,对粳稻品种盐粳188的SP1、SP2群体进行分析。结果表明,SP1与对照品种差异不显著;SP2群体各性状表现出双向分离,Shannon-Wiener多样性指数为1.786-2.082,形态距离系数为0.58-91.08,各性状变异系数为1.17%-39.21%。SP2群体出现多种形态类型,各类型群体平均Shannon-Wiener多样性指数为0.419-0.536。盐粳188的SP2群体多数性状变异幅度较大,多样性水平较高,与对照品种相比在形态上表现出明显的分化趋势。本研究结果为航天育种材料选择提供了依据。In order to understand the feature of mutagenic progenies which was mutagenized by space flight, we performed morphologic diversity of on the SP1 and SP2progenies of japonica rice yanjing188 were analyzed. There were no significant difference between the SPtand control variety, while the other hand, the bidirectional separation of each traits was observed in SP2. The Shannon-Wiener diversity index varied from 1. 786 to 2. 082. The morphologic distance coefficient ranged from 0.58 to 91.08. The variation coefficient of each trait in SP2 generation population was from 1.17% to 39.21%. Diverse morphological types were observed and the mean variation of Shannon-Wiener diversity index among each type was from 0. 419 to 0. 536. Large variations and high morphologic diversity of most traits in SP2 generation were presented in this study. These were clear differentiation between mutagenic progenies and control variety. The results of study provided the basis for artificial selection in space breeding practice.

关 键 词：粳稻品种 空间诱变 后代群体 性状变异 

分 类 号：S511.22[农业科学—作物学]