Genotype/environment interaction on yield-related traits of differently derived generations of inter-subspecific hybrid rice
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摘要: 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.
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关键词:
- 籼粳杂交 /
- 衍生世代 /
- 产量相关性状 /
- 基因型×环境互作效应
Abstract: The hereditary of yield-related traits in derivative lines from Indica-Japonica crosses of rice under different breeding stages were studied.The additive-dominance genetic model including genotype/environment interaction was used.The results showed that the traits were ubiquitous not only on the genetic main effects but also the genotype/environment interaction effects.Among them,the days from sowing to heading(DSH)and the 1000-seeds weight(SW)of the first deriving generation were mainly controlled by the additive effects.The remaining seven traits were mainly controlled by the dominant effects.The grain weight per plant(GW),seed setting rate(SS)and SW of the second deriving generation were mainly controlled by the dominant effects.The other six traits were mainly controlled by the additive effects.GW,SS,plant height and panicle length of the fourth deriving generation were mainly controlled by the dominant effects.The other five traits were mainly controlled by the additive effects.The genotype/environment interaction analysis indicated that,beside the traits(i.e.,GW,panicle number per plant(PN)and filled grain number per panicle(FGN)of the first deriving generation,the traits(i.e.,DSH,PN and GN)of the second deriving generation and the traits(PN,GN and FGN)of the fourth deriving generation could not detect any additive/environment interaction effects.The other traits all showed additive/environment interaction effects.In addition,the yield-related traits of the differently derived generations all had the dominant/environment interaction effects. -
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陈柏青,陈青,吴吉祥.陆地棉不同铃期和不同铃位成铃数杂种优势的遗传研究[J].浙江农业大学学报,1998,24(4):339-343.
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