采用包括基因型与环境互作的数量性状加性—显性发育遗传模型,分析了供试水稻对受体植物莴苣幼苗根长化感作用的动态遗传及与环境的互作效应.结果表明,Lemont和多产稻的化感作用潜力较弱;TN1、Dular和NC化感作用潜力较强,是水稻化感育种较理想的亲本.这3个品种在3、5和8叶期加性效应基因作用稳定性较好,表明在这3个叶龄期进行选择,效果较理想. The quantitative genetic additive-dominance genetic model including interaction between genotype and environment was used to analyze the dynamic inheritance and interaction with the environment of rice root elongation-inducing effect on the plant lettuce seedlings. The results showed that, The potential allelopathic potential of Lemont and multiple-cropping rice was weak, and the allelopathic potentials of TN1, Dular and NC were strong, which were the ideal parents for rice sensitization breeding. The additive effects of the three cultivars at 3, 5 and 8 leaf stage Gene stability is better, indicating that in these three leaf age to choose, the effect is more satisfactory.