在Triticum militinae衍生物中的耐性源的表征和识别
Saikat Chowdhury1, Shreshtha Bansal1, Shailendra K Jha1
1Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India.
Scientific reports
|April 24, 2024
概括
Triticum militinae衍生品 (TMD线) 显示出对小麦叶和条纹生的有希望的耐药性. 几个TMD系可能含有新型条纹抗基因,为小麦育种提供了新的途径.
科学领域:
- 植物遗传学 植物遗传学
- 农作物科学 农作物科学
- 分子生物学分子生物学
背景情况:
- 麦子的二级基因库中的Triticum militinae被认为具有抗病能力.
- 虽然T. timopheevii是其最亲密的亲属,已知有耐药基因,但T. militinae没有报告的耐药基因.
- 小麦生 (叶子和条纹) 对全球作物产量构成重大威胁.
研究的目的:
- 评估Triticum militinae衍生品 (TMD线) 对叶子和条纹生的抗性.
- 为了识别具有幼苗和成年植物耐药性的TMD线条.
- 探索T. militinae中潜在的新型耐药基因.
主要方法:
- 评估21个TMD线的叶子和条纹在幼苗和成年植物阶段的耐性.
- 使用链接标记对已知耐药基因 (Lr34/Yr18,Lr18,Lr50) 的查.
- 对TMD线的细胞学稳定性评估.
主要成果:
- 八个TMD系表现出幼苗对叶子和条纹的抵抗力.
- 六个TMD线路显示,幼苗对叶子生有抵抗力,成年植物对条纹生有抵抗力.
- 三个TMD系携带已知的Lr34/Yr18基因,赋予成年植物对两种的抵抗力.
- 几条具有苗叶抗能力的TMD系缺乏已知的Lr18和Lr50基因.
- 八个具有幼苗条纹耐性和三个具有成年植物条纹耐性的TMD线条是新型耐药基因的候选者.
结论:
- TMD线路显示出小麦抗性具有显著的潜力.
- 几个TMD系可能含有以前未被发现的条纹抗基因.
- 已识别的TMD线条在细胞学上稳定,适合进一步的遗传研究,包括遗传和映射.
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