| 陆地棉F2产量性状杂种优势的遗传分析及其预测 |
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| 引用本文： | 吴吉祥,朱军,许馥华,季道藩.陆地棉F2产量性状杂种优势的遗传分析及其预测[J].中国农业大学学报,1993(Z4):95-99. |
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| 作者姓名： | 吴吉祥 朱军 许馥华 季道藩 |
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| 作者单位： | 浙江农业大学农学系;浙江农业大学农学系 杭州;310029; |
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| 摘 要： | 根据加性-显性遗传模型,采用 MINQUE(1)分析了10个陆地棉亲本、20个组合的F_1和 F_2的产量性状的资料。结果表明,F_2皮棉产量、前期收花率、单铃重和衣分的群体超亲优势的平均值分别为:19%、13%、3%和—6%;单株铃数不显著。加性效应和显性效应对产量性状的遗传都有极显著的作用,其中皮棉产量有较强的显性效应,衣分有较强的加性效应。性状的显性方差同加性方差的比值越大,F_2的优势也越大;此外,还分析了 F_2部分高产组合的遗传表现。用两种方法预测 F_2杂种优势的相关分析表明,用 F_1和亲本预测 F_2的遗传表现的结果可信。
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| 关 键 词： | 陆地棉(G.hersutum L.) 产量性状 遗传方差分量 F_2杂种优势 |
Genetic Analysis and Prediction on F2 Heterosis of Yield Traits in Gossypium hirsutum L. |
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| Wu Jixiang Zhu Jun Xu Fuhua Ji Daofan.Genetic Analysis and Prediction on F2 Heterosis of Yield Traits in Gossypium hirsutum L.[J].Journal of China Agricultural University,1993(Z4):95-99. |
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| Authors: | Wu Jixiang Zhu Jun Xu Fuhua Ji Daofan |
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| Institution: | Wu Jixiang Zhu Jun Xu Fuhua Ji Daofan (Agronomy Department,Zhejiang Agricultural University,Hangzhou 310029) |
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| Abstract: | Ten cotton parents(Gossypium hirsutum L.),twenty F_1s and twenty F_2 swere analysed by additive-dominance genetic model with MINQUE(1)approach.F_2 heterosis over better parent averaged 19%,13%,30% and-6% for lint yield,first piching percentage,boll siae and lint peroentage,respectively, but for bolls per plant not signifcant for all traits.Especially,the dominance effects were more important than the additive effects for yield,however,the additive effects were more important than dominance effects for lint ... |
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| Keywords: | upland cotton (G hersutum L ) yield traits Genetic variance components F_2 Heterosis |
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