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采用包括基因型×环境互作效应的加性-显性遗传模型(AD模型),分析了水稻籼粳杂交不同选育阶段衍生系产量相关性状的遗传表现规律。结果表明,所测定各产量相关性状中普遍存在着遗传主效应,且也普遍存在基因型×环境互作效应。其中,衍生一代的播抽天数和千粒重性状以加性效应为主,其余7个性状以显性效应为主;衍生二代的单株谷重、结实率和千粒重性状以显性效应为主,其余6个性状则以加性效应为主;衍生四代的单株谷重、结实率、株高和穗长性状以显性效应为主,其余5个性状以加性效应为主。基因型×环境互作分析表明,除衍生一代的单株谷重、单株有效穗数、每穗实粒数性状和衍生二代的播抽天数、单株有效穗数、每穗总粒数性状以及衍生四代的单株有效穗数、每穗总粒数和每穗实粒数性状没有检测到加性×环境互作效应外,其余性状均存在加性×环境互作效应。此外,不同衍生世代各产量相关性状均存在着显性×环境互作效应。
The additive-dominance genetic model (AD model) including genotype × environment interaction effects was used to analyze the genetic performance of yield-related traits of derivative lines at different stages of indica-japonica cross in rice. The results showed that there was a general genetic major effect among the tested yield-related traits, and genotype × environment interaction effect also prevailed. Among them, the sowing days and 1000-grain weight traits of the derivative generation were mainly additive effects, while the remaining 7 traits dominated the dominant effect. The grain weight, seed setting rate and 1000-grain weight traits of the derived second generation dominated the dominant effect, The other six traits were mainly additive effects. The grain weight per plant, seed setting rate, plant height and spike length traits of the four generations were dominated by dominant effect while the remaining five traits were mainly additive effect. Genotype × environment interaction analysis showed that in addition to the generation of single grain weight per plant, the number of panicles per plant, the number of grains per panicle and the second generation of sowing days, the effective panicle per plant, the total number of panicle per panicle There were additive × environment interaction effects in the traits except for the additive × environment interaction effect per panicle number, panicle number per panicle and grain number per panicle. In addition, there are dominant × environmental interaction effects among the yield-related traits in different derived generations.