Abstract:

Using AMMI model, we analyzed yield’s relative traits such as genotype and environmental effects of varieties（combinations）of japonica rice regional trials of Guizhou Province. The results indicated that the effect degree of genotype, environment, genotype×environment interaction on 7 trials is different: Growing period, effective panicle mainly were effected by environment; Height mainly was influenced by genetic effects and environmental effects; Grain number, seed setting rate and 1000-grain weight are also influenced by genotype, environment, genotype×environment interaction. But environmental effects was relatively large. The influence order on yield was: genotype × environment＞genotype＞environment. In mountainous area of Guizhou Province, yield’s relative traits such as genotype, environment, genotype×environment interaction should be selected in order to raise the breeding efficiency.