Abstract: The data of South China early maturity group of indica rice in China's southern rice regional trial in 1997 was analyzed with AMMI models and corresponding biplots. The genotypes and environments(G×E) interaction correlation analysis with external climate factors were given, and the varieties with large positive interaction were identified. The findings indicated that location main effect are significantly positively correlated with radiation during rice seedling stage and rainfall during heading and filling stage. Temperature was the leading climate factor, while rainfall in July was the second one, affecting G×E interaction.

Key words: genotype by environment interaction, AMMI model, biplot, regional trial, climate factors

摘要： 利用AMMI 模型分析了1997 年南方水稻区试华南早籼组的数据, 并着重探讨了G×E 互作与气候的相互关系,解释气候对G×E 互作的影响, 以鉴别并利用具有有利G×E 互作的品种。分析结果表明, 气候因子中主要是秧田期的日照和抽穗灌浆期的降雨影响参试地点的产量水平; 而影响G×E 互作的主要气候因子是气温, 其次是7 月成熟期的降雨量。

关键词: 基因型与环境互作, AMMI 模型, 双标图, 区域试验, 气候因子