在Pisum sativum中探索与种子等量学相关的新型SNP和候选基因
Bhubneshwari Khajuria1, Prakriti Rajput1, Rehana Chowdhary1
1Plant Physiology Laboratory, Department of Botany, University of Jammu, Jammu, 180006 India.
概括
研究人员通过全基因组关联研究 (GWAS) 确定了影响豆种子大小的关键基因. 这种遗传洞察力可以改善豆子育种,以获得更大,更均的种子,使农民和消费者受益.
科学领域:
- 农业科学 农业科学
- 遗传学 是一个遗传学.
- 植物育种 植物育种
背景情况:
- 种子大小是豆类种子质量的关键农学特征.
- 农民和消费者更喜欢更大和更均的种子.
- 控制豆种子大小和全米特征的遗传因素尚未得到充分了解.
研究的目的:
- 使用全基因组关联研究 (GWAS) 识别与豆 (Pisum sativum L.) 种子大小相关的新型候选基因.
- 提供显著单核酸多态 (SNPs) 和 pea种子大小改进的候选基因列表.
主要方法:
- 在240个豆生殖细胞板上进行了GWAS (豆单一植物加收集 - PSPPC).
- 测量了种子的所有米特征:种子的长度,宽度,厚度,体积,生物量和种子的体积生物量 (SB_V).
- 在R-studio中使用基因组关联和预测集成工具 (GAPIT) 与贝叶斯信息和链接不平衡代嵌套关键路 (BLINK) 模型.
主要成果:
- 确定了与所有测量的种子全米特征相关的显著SNP.
- 发现了与特定特征相关的候选基因:Psat2g072000 (种子长度),Psat4g104320 (种子宽度),Psat6g125800和Psat6g125840 (种子厚度),Psat6g228320 (种子体积),Psat2g143920 (种子生物量) 和Psat2g120400 (SB_V).
结论:
- 已识别的基因为增强豆种子大小提供了宝贵的遗传资源.
- 这些发现可以促进种子培育计划和CRISPR干预,以获得理想的种子特征.
- 了解种子大小的遗传基础是开发高产,营养丰富的豆类品种的关键.
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