Abstract: By using genetic model including genotype×environment (GE) interaction effects for quality traits of endosperms in cereal crops, the genetic effects of appearance quality traits in japonica hybrid rice were analyzed. Results indicated that appearance quality traits were all significantly affected by GE interaction effects as well as the genetic main effects of seed, cytoplasm and maternal genes. 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 the genetic main effects, but translucency (TR) was mainly affected by GE interaction effects. Most heritabilities of rice appearance quality traits were significant. The general heritability was the main parts for BRL, L/W, L/T and chalkiness, but the interaction heritability was more important for TR. The potential breeding values of parental lines for the improvement of quality were discussed in respect to predicted values of genetic effects.

Key words: hybrid rice, appearance quality, main genetic effects, genotype×environment interaction effects

摘要： 摘要： 采用包括基因型×环境互作效应的种子遗传模型，对粳型杂交稻稻米外观品质性状进行了遗传研究。结果表明各外观品质性状除了受种子、细胞质和母体植株等遗传主效应控制外，还明显受到基因型×环境互作效应的影响。其中糙米长、长宽比和长厚比性状以遗传主效应为主，而透明度性状以基因型×环境互作效应为主。多数稻米外观品质性状的狭义遗传率较高，其中糙米长、长宽比、长厚比、垩白度性状以普通狭义遗传率为主，而透明度性状则以互作狭义遗传率为主。另外，根据性状的遗传效应预测值对各亲本的育种利用价值作了评价。

关键词: 杂交水稻, 外观品质, 遗传主效应, 基因型×环境互作效应