籼型三系杂交早稻粒形及产量性状的加性相关和显性相关分析

基金项目:

福建省科技计划项目(2007S00592004NZ01-1);福建省财政专项-福建省农业科学院科技创新团队建设基金(STIF-Y04);福建省农业科学院青年科技人才创新基金项目(2006);福建省发改委产业技术开发专项(2007)

Additive and dominance correlations between grain shape and yield of early-season Indica hybrid rice

1.
Rice Research Institute, Fujian Academy of Agricultural Sciences, Fuzhou, Fujian 350019, China;
2.
College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China

摘要: 以6个籼稻不育系为母本和5个早籼恢复系为父本进行不完全双列杂交。采用加性-显性遗传模型,对籼型三系杂交早稻粒形及产量性状进行多种相关分析。结果表明各性状间的加性相关比显性相关更为重要,并且多数性状间存在着一定的相关性,特别是产量性状间的相关最为密切,其次为谷粒性状。在产量与粒形性状间的相关性上,少量性状间具有较高的相关系数,利用加性相关为主的性状进行间接选择可取得较好的育种效果。
- 籼稻 /
- 粒形性状 /
- 产量性状 /
- 加性相关 /
- 显性相关
Abstract: Correlation analysis between the grain shape characteristics and yield traits of an incomplete diallel cross of the early-season Indica rice(Oryza sativa L.)was conducted based on the additive and dominance genetic model.The results showed that there were significant correlations among most of the traits,and that the additive correlations were more important than the dominance correlations.The yield traits were found most closely correlated,followed by the grain shape.Between yield and grain shape of the Indica rice,a few characteristics showed high correlation coefficients.Traits with high additive correlations were thus recommended as an indicator for indirect selection of the early-season Indica rice hybrids.
- Indica rice /
- grain shape /
- yield traits /
- additive correlation /
- dominance correlation

[1]	李成荃,孙明,许克农,等.杂交粳稻品质性状的遗传研究Ⅰ.碾米品质与籽粒外观性状的相关和通径分析[J].杂交水稻,1988(4):32-35.