中国水稻科学

中国水稻科学

• 研究报告 • 上一篇    下一篇

高产早稻品种理想型性状的研究

周清明；康春林；尹大德； 蒋佐昇；伏 军； 李 娟   

  1. 湖南农学院，长沙410128
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1993-01-10 发布日期:1993-01-10

Optimal Characters of High-Yield Varieties in Early Rice

Zhou Qingming; Kang Chunlin; Yin Dade; Jiang Zuosheng; Fu Jun; Li Juan   

  • Received:1900-01-01 Revised:1900-01-01 Online:1993-01-10 Published:1993-01-10

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被引次数

485

摘要： 在1989~1990年两年试验的基础上，对19个早籼和8个早粳高产品种的193个性状的育种值进行了逐步回归和通径分析。 结果表明：1)早籼高产品种共有谷草比、单株生物产量、成熟时绿叶剩存率、蜡熟期剑叶胞间CO2浓度等10个理想型性状，由这10个理想型性状建立的回归方程预测准确率均在93.87％以上且χ2 测验效果好；2)早粳高产品种共有移栽时最大叶长、主茎倒二节间直径等7个理想型性状．由这7个理想型性状建立的回归方程其预测准确率均达97．47％以上，且χ2测验效果好； 3)有3个理想型性状的广义遗传力高（>0.92）)。其它理想型性状的广义遗传力均为中等(0.50～0.76)。就几个特别重要的理想型性状对产量的作用机理进行了讨论，

关键词: 早稻, 品种, 性状, 广义遗传力

Abstract: Based on the two years(1989-1990) experimental data, stepwise analysis and path analysis were conducted for the breeding values of 193 characters of 19 early indica and 8 early japonica high-yield varieties. Theresuits indicate: 1) There are all 10 optimal characters such as grain and straw ratio, biological yield per plant, residual rate of green leaf in full ripening stage, CO2 concentration between cells of flag leaf at dough stage in early indica high-yield varieties. The forecast correctness rate of regression equation set up by the 10 optimal characters are all above 93.8%; 2) There are all 7 optimal characters such as maximum leaf length in transplanting, diameter of the second internode from the top in main stem in early japonica high-yield varieties. The forecast correctness rates of regression equation set up by the 7 optimal characters are all above 97.47%, 3) Broad heritabilities of 3 optimal characters are above 0.92 and of the rest are between 0.50 to 0.76. The action mechanism of the important optimal characters especially upon grain yield are also discussed.

Key words: Broad heritability, Early rice, High-yield variety