摘要
用２个籼型水稻光温敏核不育系和７个粳型广亲和品种为材料，按ＮＣⅡ设计配制杂交组合，获得亲本、Ｆ１及Ｆ２代的籽粒群体，对８个主要品质性状和６个农艺性状进行测定，按混合线性模型的分析方法对品质性状与农艺性状之间的遗传协方差进行了研究，结果表明：在籼粳亚种间杂交组合中，稻米理化品质性状与植株农艺性状之间的遗传协方差大都为直接加性／母体加性协方差，外观品质性状与农艺性状之间的遗传协方差则主要是直接加性／母体加性协方差和母体加性／母体加性协方差，细胞质效应协方差也普遍存在．
Crosses were made in a NCⅡ design to obtain the kernel populations of parents, F 1 and F 2 generations, using two photothermosensitive genic sterile lines of Indica type and seven widecompatibility varieties of Japonica type as parents. Eight main quality traits of rice and six agronomic characters were measured. Genetic covariances bewteen these two sets of traits were studied with a mixedlinear model method. The results indicated that the genetic covariance components between physicochemical quality traits of seeds and agronomic characters of their maternal plants were mainly direct additive/maternal additive covariances, and those between appearance quality traits and agronomic characters were mainly direct additive/maternal additive covariances and maternal additive/maternal additive covariances. Genetic covariances due to cytoplasmic effects were also detected.
出处
《湖北大学学报（自然科学版）》
CAS
1997年第3期278-282,共5页
Journal of Hubei University：Natural Science
基金
国家教委"跨世纪人才"专项基金
关键词
水稻
籼粳杂交
品质性状
农艺性状
遗传协方差
Oryza sativa
Indicajaponica hybridization
Quality traits
Agronomic characters
Genetic covariances
