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用包括基因型×环境互作效应的加性—显性—加性×加性上位性遗传模型和统计方法 ,对水稻茎秆抗倒性杂种优势进行了研究 .结果表明 ,评价水稻茎秆抗倒性的 5个性状 (秆长、茎粗、茎基抗折力、秆型指数和抗倒指数 )的杂种优势既由基因型控制也受环境 (年份 )互作效应影响 .茎粗对环境的敏感性较弱 ,表现较低的正向群体平均优势和负向群体超亲优势 .基因型×环境互作效应影响了秆型指数和抗倒指数杂种优势表达的程度和方向 .秆长、茎基抗折力在不同环境中均表现正向基因型×环境互作效应 ,这表明随着环境的改善均可增强杂种优势
The additive-dominance-additive × additive epistasis genetic model including genotype × environment interaction effects and statistical methods were used to study the heterosis of lodging resistance in rice stem. The results showed that the evaluation of the resistance of rice stem The heterosis of five traits (culm length, stem diameter, stem resistance, stalk index and fall resistance index) was controlled both by genotype and by the interaction of environment (year) , The average positive heterosis of negative group and the negative group were lower than that of negative group.The genotype × environment interaction effect the degree and direction of the heterosis expression of stalk type index and lodging resistance index.The culm length, The stress-resistance of stem base showed positive genotype × environment interaction effect in different environments, which indicated that the heterosis could be enhanced with the improvement of environment