粳型杂交稻稻米外观品质性状的遗传效应研究
林建荣;吴明国;石春海
【期刊名称】《中国水稻科学》 【年(卷),期】2001(015)002
【摘要】Four male sterile lines and nine restorer lines were used inincomplete diallel crosses to analyze the genetic effects of appearance quality traits in japonica hybrid rice by using the genetic model and analysis method for quality traits of endosperms in cereal crops. The results indicated that brown rice length (BRL),ratio of brown rice length to width(L/W) and ratio of brown rice length to thickness (L/T) were mainly controlled by maternal additive effects, but translucency （TR）were mainly controlled by maternal additive and direct additive effects. Chalky grain rate (CGR) and chalkiness (CH) were mainly controlled by direct additive and maternal additive effects, with direct additive effect predominating. The direct, cytoplasmic and maternal heritability were significant or highly significant for most traits. Maternal heritability were the main parts of heritability for BRL, L/W, L/T and TR , but direct heritability were more important for CGR and CH. The potential breeding values of parental lines for the improvement of quality were discussed in respect to predicted values of genetic effects.%以宁67A等4个粳型不育系与K1722等9个粳型恢复系进行不完全双列杂交，采用禾谷类作物胚乳品质性状的遗传模型及其分析方法，对粳型杂交稻稻米外观品质性状
粳型杂交稻稻米外观品质性状的遗传效应研究
