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番茄果实耐贮性的遗传分析

DOI: 10.3321/j.issn:1000-7091.2005.04.012, PP. 44-48

Keywords: 番茄,硬度,耐贮性,遗传分析

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Abstract:

以80份番茄地方品种和自育自交系为材料,对它们的果实硬度和果实软化速度的遗传表现,以及与其他主要农艺性状的相关性进行了研究。结果表明,果实硬度和软化速度在基因型间有极显著的差异。成熟期的果实硬度和软化速度呈极显著负相关,但也有一些硬度很低的品种,软化速度反而很慢,耐贮性非常好;软化速度和果重、果型指数、含糖量、果实含水量等无显著的线性相关,说明耐贮性同这些重要经济性状和品质性状没有必然的联系,完全能够对它们进行同步改良。F1果实的软化速度表现为部分显性,耐贮性一般倾向于不耐贮的亲本;只有双亲的果实软化速度都比较慢时,杂种后代的果实才表现出良好的耐贮性。

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