小麦矮秆突变体矮秆基因的遗传分析

发布时间：2018-05-21 01:38

本文选题：小麦 + 矮秆突变体　；参考：《河北农业大学学报》2017年02期

【摘要】：目前在小麦中虽然已经命名了20余个矮秆基因,但小麦矮秆基因资源应用单一化的现状仍然存在,因此对小麦新矮源的筛选与研究显得十分必要。本研究以1个小麦矮秆突变体‘矮128’为材料,通过赤霉酸处理、遗传分析、基因等位性测验和DNA分子标记等手段分析了该矮秆突变体矮秆基因的性质及可能来源。结果表明:‘矮128’属赤霉酸不敏感型矮秆突变体,其矮秆性状受1对隐性基因控制,该基因与Rht8、Rht9、Rht13、RhtB1b(Rht1)、RhtD1b(Rht2)、RhtD1c(Rht10)和Rht16等矮秆基因不是等位基因,也不同于Rht4、Rht5、Rht8、Rht9、Rht12、Rht13等6个已知矮秆基因。尽管如此,‘矮128’中的矮秆基因是否为新的矮秆基因仍然需进一步的遗传分析加以明确。
[Abstract]:Although more than 20 dwarf genes have been named in wheat at present, there is still a single application of dwarf gene resources in wheat, so it is very necessary to screen and study the new dwarf source of wheat. In this study, a wheat dwarf mutant 'Dwarf 128' was used to analyze the character and possible source of dwarf gene by gibberellic acid treatment, genetic analysis, allelic test and DNA molecular marker. The results showed that the dwarf character of the dwarf mutant 'Dwarf 128' was controlled by a pair of recessive genes, which were not alleles with RhtD1B1B1rt1 and Rht16, and were different from six known dwarf genes, such as Rht4Rh T5, Rht8rt9rt9rt9rt9rt12Rht13 and other known dwarf genes, such as RhtD1cRht10) and RhtD1cRht10. the results showed that the dwarf characters of the dwarf mutant were controlled by a pair of recessive genes, and this gene was not allele with RhtD1cRht10, and was also different from six known dwarf genes, such as Rht8rt9rt9rt9rt12Rht13. However, whether the dwarf gene in Dwarf 128 is a new dwarf gene needs further genetic analysis.
【作者单位】：河北农业大学农学院;保定市农业科学院;
【基金】：河北农业大学大学生创新创业训练计划资助项目(20160104;20161008019);河北农业大学“百名青年学术带头人培养项目” 河北省现代农业产业技术体系小麦创新团队等项目资助
【分类号】：S512.1

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