摘要
采用包括基因型×环境互作效应在内的加性—显性—加性×加性上位性遗传模型 ,分析了不同环境下水稻茎秆抗倒性的遗传特点。结果表明 ,茎秆抗倒性均受到基因加性、显性、加性×加性上位性及其与环境互作效应的显著影响 ,其中以显性效应及其与环境互作效应为主。除了茎粗的普通狭义遗传率达 4 0 .6%外 ,其他性状的普通狭义遗传率较低。遗传效应预测结果表明 ,亲本 IR66158- 37和 IR6560 0 - 85有使后代降低秆长、增加茎粗、增大秆型指数、提高茎基抗折力和抗倒指数的遗传效应 ,明恢 63在提高茎基抗折力和抗倒指数上也有明显的正效应 ,认为这
Genetic models including genetic effects and genotype×environment interaction for Additive\|Dominant\|Additive×additive epistasis were used to analyze the lodging resistance of the culm of rice (Oryza sativa L ) in different environments The results showed that significant additive, dominant and additive×additive epistatic effects and genotype×environment (GE) interaction were observed for all the traits tested Among five traits studied, they were mainly controlled by dominant effects and GE interaction effects General narrow\|sense heritability of the culm thickness was 40 6%, showing higher than those of other traits under consideration According to the predicated genetic effects, the parents IR66158\|37 and IR65600\|85,contributed to the decrease in culm length, and to the increase in culm thickness and culm type index, and to the improvement of the breaking strength of the basal culm with leaf sheaths (BSBCLS) and resistant index to lodging(RIL) in their crossing progenies, Minhui 63 contributed with the improved BSBCLS and RIL Hence these three varieties were considered elite parental materials for the new plant type rice breeding for super\|high yield.
出处
《福建农业学报》
2000年第3期9-15,共7页
Fujian Journal of Agricultural Sciences
基金
福建省教委科技资助项目 !(K9916 1)
关键词
水稻
茎杆抗倒性
基因型×环境互作
遗传率
Rice (Oryza stativa L )
Lodging resistance of the culm
Genotype×environment interaction
Additive×additive epistasis
Heritability
