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Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
GWAS does not require the identification of the target gene involved in...
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开发下一代SNP小麦基因型阵列,用于小麦.

Amanda J Burridge1, Mark Winfield1, Alexandra Przewieslik-Allen1

  • 1School of Biological Sciences, University of Bristol, Bristol, UK.

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|March 23, 2024
PubMed
概括

一个新的基因型阵列,Triticum aestivum下一代 (TaNG) 阵列,为六倍体小麦提供了更好的SNP多样性和性能. 该工具增强了对小麦育种的基因绘图和全基因组关联研究.

关键词:
在Triticum aestivum中,它是最重要的.一个Axiom阵列是一个Axiom阵列.这是一种繁殖繁殖.基因型定制是基因型定制.单个核酸的多态性.小麦小麦小麦小麦小麦小麦小麦.

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科学领域:

  • 农业科学 农业科学
  • 遗传学 是一个遗传学.
  • 生物信息学是一种生物信息学.

背景情况:

  • 现有的小麦基因型阵列 (例如35K小麦育种器,Illumina 90K) 受到序列多样性和SNP位置精度的限制.
  • 小麦测序和基因型技术的进步使得开发更全面,更准确的数组成为可能.
  • 高通量基因型定型对于成本效益高,可靠地分析六倍体小麦及其亲属至关重要.

研究的目的:

  • 介绍一个新的Axiom基因型排序阵列,Triticum aestivum下一代 (TaNG) 阵列,用于六倍状小麦.
  • 为了利用最近在小麦测序和基因型技术的进步,改进SNP选择和阵列设计.
  • 提高基因映射分辨率和性能,用于全基因组关联研究 (GWAS) 和复制数变异 (CNV) 分析.

主要方法:

  • 设计了TaNG阵列,使用来自204种精英小麦品种和111种陆地品种的全基因组脱皮测序数据.
  • 采用一种新的哈普洛型优化方法来选择具有高品种歧视的SNP.
  • 利用设计代过程来测试和替换不可靠的SNP,并结合了新型和旧型标记.

主要成果:

  • 最终的TaNG阵列设计具有43,372个SNP,与以前的阵列相比,分布更好.
  • 该阵列能够生成具有显著更高数量的不同容器的遗传图.
  • 证明了GWAS的性能改善和CNV分析的实用性.

结论:

  • 塔NG阵列代表了对六倍体小麦的高通量基因定型的重大进步.
  • 其增强的SNP内容和性能改善了基因绘图,并促进了强大的基因组分析.
  • 该阵列在商业上可供使用,支持小麦的持续研究和育种工作.