| 水稻株高突变体的遗传分析 |
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| 引用本文： | 宋幼良.水稻株高突变体的遗传分析[J].四川农业大学学报,2011,29(3). |
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| 作者姓名： | 宋幼良 |
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| 作者单位： | 绍兴市农业科学研究院,浙江绍兴,312003 |
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| 摘 要： | 以伽马射线诱变籼稻品种"93-11"获得的5个长穗颈突变体"eR-1～eR-5"为材料,与野生型对比研究表明,5个长穗颈突变体植株、倒Ⅰ节间和倒Ⅱ节间分别显著增高和变长,穗长显著变长,突变体"eR-4"和"eR-5"分蘖能力显著提高,每穗粒数和结实率变化不显著,千粒重和单株产量均不同程度下降,其中突变体"eR-1"和"eR-2"的单株产量显著下降。等位性测定表明,突变体"eR-1"、"eR-2"、"eR-4"和"eR-5"的eui突变基因相互等位,并与已报道的eui基因等位,而与突变体"eR-3"的eui突变基因不等位。由此说明,"eR-3"是一个新的长穗颈突变体,其长穗颈性状受1对隐性核基因控制。
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| 关 键 词： | 水稻 长穗颈(eui) 遗传分析 |
Genetic Analysis of Plant Height Mutants in Rice |
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| SONG You-liang.Genetic Analysis of Plant Height Mutants in Rice[J].Journal of Sichuan Agricultural University,2011,29(3). |
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| Authors: | SONG You-liang |
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| Abstract: | Five mutants "eR-1-eR-5" with elongated uppermost internode(eui) derived from indica rice "93-11" induced by Cobalt-60 gamma rays.Compared with those of wild type "93-11",plant heights and uppermost and second uppermost internodes of mutants significantly increased and elongated,panicle lengths of mutants significantly lengthened,the tillering ability was improved in mutants "eR-4" and "eR-5",and there was no significant difference in number of grains per panicle and seed setting rate,1 000-grain weights and yield per plant were reduced to different extents in mutants,especially significant decreases appeared in yield per plant of mutant "eR-1" and "eR-2".Allelic test indicated that the eui genes of mutants "eR-1,2,4,5" were allelic to each other and the previously reported eui,but non-allelic to the eui gene of mutant "eR-3",suggesting it is a new mutation.Genetic analysis of new eui mutant "eR-3" showed that the elongated uppermost internode(eui) trait was controlled by one recessive nucleic gene. |
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| Keywords: | rice(Oryza sativa L ) elongated uppermost internode(eui) genetic analysis |
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