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香型优质水稻三系不育系德香074A产量性状配合力分析

  1. 四川省农业科学院水稻高粱研究所/国家水稻改良中心泸州分中心/农业农村部西南水稻生物学与遗传育种重点实验室,四川 德阳 618000
  • 出版日期:2020-05-20 发布日期:2020-05-20
  • 通讯作者: 郑家奎
  • 基金资助:
    国家重点研发计划(2017YDF0100205;2016YFD0101101);四川省重点研发计划(2016NY 0028)

Analysis on Combining Ability of Yield Traits of Aromatic and High Quality Rice Cytoplasmic Male Sterile Line Dexiang 074A

  • Online:2020-05-20 Published:2020-05-20

摘要: 利用香型高配合力三系不育系德香074A及其他4个生产上应用面积较大的不育系(K22A、冈46A、Ⅱ-32A和K17A),按照NCⅡ设计的原理,分别与明恢63、成恢727、泸恢H103、泸恢8258和蜀恢527等5个恢复系杂交,构建双列杂交群体,分析了单株产量、单株有效穗数、单穗质量、每穗颖花数、每穗实粒数、结实率、千粒重等7个产量相关性状的遗传力及配合力。结果表明,德香074A共有6个性状一般配合力效应值为正值,分别是单株产量(9.04)、单株有效穗数(6.27)、单穗质量(3.29)、每穗实粒数(0.15)、结实率(1.40)和千粒重(2.40),是供试不育系中正值性状最多的不育系。7个性状中,千粒重的遗传力最强,广义和狭义遗传力分别为94.69%和80.69%,表明这一性状不易受环境的影响。

关键词: 香型不育系, 德香074A, 产量性状, 配合力

Abstract: In this study, according to North Carolina design II(NC II Design), the aromatic cytoplasmic male sterile line Dexiang 074A and four other sterile lines (K22A, Gang 46A, II-32A and K17A) were used, crossed with five restorer lines, such as Minghui 63, Chenghui 727, Luhui H103, Luhui 8258 and Shuhui 527, respectively, constructing a double-row hybrid population, the combining ability of yield and relate traits were analyzed . Seven traits including yield per plant(YP), effective panicles per plant (EP), weight per panicle(WP), spikelets per panicle(SP), full grains per panicle(FGP), seed setting rate(SSR) and 1 000-grain weight(TGW). The results showed that Dexiang 074A was the most positive trait in the sterile line, there were 6 traits general combining ability effect value was positive, YP was 9.04, EP was 6.27, WP was 3.29, FGP was 0.15, SSR was1.40, TGW was 2.40. Among the 7 traits, TGW had the strongest heritability, and the broad heritability and narrow heritability was 94.69% and 80.69% respectively, which indicating that this trait is not susceptible to environmental changes.

Key words: aromatic cytoplasmic male sterile line, Dexiang 074A, yield traits, combining ability

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