开发具有成本效益的SNP标记物,用于在培养梨 (Pyrus spp.) 中进行遗传变异分析和品种识别
Jae-Hun Heo1, Jeyun Yeon1, Jin-Kee Jung2
1Department of Bioindustry and Bioresource Engineering, Sejong University, Seoul 05006, Republic of Korea.
Plants (Basel, Switzerland)
|September 28, 2024
概括
研究人员在梨 (Pyrus spp.) 中发现了超过25万个单核酸多态 (SNP). 为了理解遗传多样性. 一个232个SNP的子集有效地区分亚洲和欧洲梨种,并有助于品种识别.
科学领域:
- 基因组学就是基因组学.
- 植物科学 植物科学
- 农业科学 农业科学
背景情况:
- 梨子 (Pyrus spp.) 是一种梨子. 是罗萨ceae家族中的一个重要的水果作物,需要为精英品种进行先进的育种.
- 单核酸多态 (SNP) 是作物基因组学中关键的DNA标记物,由测序技术的进步驱动.
研究的目的:
- 在培养梨的加入中进行大规模的SNP发现.
- 确定可靠的SNP来评估遗传变异,并开发用于梨子品种识别的DNA条形码系统.
主要方法:
- 通过测序 (GBS) 的基因定型被用于48种培养梨的加入,以发现SNP.
- 过了288个自信的SNP的子集,然后用它来基因型额外的144个加入 (共192个加入).
- 分析了多态SNP的遗传变异,物种差异化和品种识别效率.
主要成果:
- 总共有256538个有信心的SNP在17个梨染色体中被识别出来.
- 232个可靠的SNP揭示了显著的遗传变异,将亚洲梨种 (P. pyrifolia,P. ussuriensis,P. bretschneideri) 和杂交物种与欧洲种 (P. communis) 区分开来.
- 在P. pyrifolia种群中,遗传多样性更高. 一个192SNP子集实现了90.1%的品种识别率,与232SNP组 (91.1%) 相比.
结论:
- 已识别的SNP为研究种植梨的遗传多样性提供了宝贵的资源.
- 开发的SNP标记是有效区分梨种和杂交的.
- 这些SNP可以构成一个高效的DNA条形码系统的基础,用于准确的梨品种识别.
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