在豆 (Vigna radiata) 基因型中耐受收割前发芽的遗传变异
Soma Gupta1, Muraleedhar Aski1, Gyan Prakash Mishra1,2
1Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, Delhi, India.
PeerJ
|July 29, 2024
概括
收获前发芽 (PHS) 显著影响豆产量. 生殖质谱表现出比释放品种更好的PHS耐受性,小种类类型更耐受. 确定的捐赠者可以帮助繁殖计划.
科学领域:
- 农业科学 农业科学
- 植物育种 植物育种
- 遗传学 是一个遗传学.
背景情况:
- 收获前发芽 (PHS) 是豆的主要非生物压力,降低了产量和质量.
- 了解PHS耐受性的遗传变异性对于开发弹性豆品种至关重要.
研究的目的:
- 为了评估豆基因型中PHS耐受性的遗传多样性.
- 为了确定产量贡献特征和PHS耐受性之间的关联.
主要方法:
- 研究了83种豆基因型的PHS耐受性,水浸泡和身体特征.
- 利用相关性和多变量分析来确定与PHS的特征关联.
- 在选择的PHS耐受性和敏感性基因型中评估了新鲜种子发芽.
主要成果:
- 观察到PHS (17.8%81%) 的广泛变化,生殖质线表现出更高的耐受性.
- PHS与木水浸泡和发芽木百分比正相关.
- 小种子基因型 (<3g) 显示出比粗种子基因型 (>3.5g) 更大的PHS耐受性.
- 新鲜种子发芽与PHS有很强的相关性 (r=0.79).
结论:
- 豆生殖质谱为PHS耐受性育种提供了宝贵的遗传资源.
- 盆子水浸泡,发芽盆子百分比和种子大小是PHS耐受性的关键指标.
- 特定的基因型 (M 1255,M 145,M 422,M 1421) 是豆繁殖计划中PHS耐药性的有希望的遗传捐赠者.
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