相关实验视频

Updated: Jun 29, 2025

A PCR-based Genotyping Method to Distinguish Between Wild-type and Ornamental Varieties of Imperata cylindrica

A PCR-based Genotyping Method to Distinguish Between Wild-type and Ornamental Varieties of Imperata cylindrica

Published on: February 20, 2012

使用竞争性等位基因特异性PCR-单核酸多态性标记物剖析USDA牛种子质收集的遗传多样性

Jesse Potts^1,2, Vincent N Michael², Geoffrey Meru³

¹Department of Agricultural Sciences, Tennessee State University, Nashville, TN 37209, USA.

|March 28, 2024

概括

牛豆 (Vigna unguiculata L. Walp) 的遗传多样性使用竞争性等位基因特异性PCR (KASP) 标志物进行评估. 这项研究揭示了种群内部的显著差异,有助于牛豆繁殖和生殖质管理.

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:

豆 (Vigna unguiculata L. Walp) 是一个重要的亚热带豆类作物,对西非的小规模农民至关重要.
生产挑战包括害虫,疾病,杂草和非生物压力,需要基因改进.
探索多样化的遗传资源是提高牛弹性和产量的关键.

研究的目的:

评估来自美国农业部核心收藏的361个牛豆加入中的遗传多样性.
验证和应用竞争性亚ليل特异性PCR (KASP) 单核酸多态性 (SNP) 标记物用于遗传分析.
了解种群结构和遗传变异,以改进牛繁殖策略.

主要方法:

使用102个KASP-SNP标记器对361个牛加入的基因型定型.
在整个生殖质面板中验证了72个多态KASP-SNP.
种群结构分析,遗传学分析和分子变异分析 (AMOVA).

主要成果:

记录了0.29的平均多态信息含量 (PIC) 和0.52的平均观察异构性.
遗传学分析发现了三种不同的种群,分为两个主要群体.
AMOVA表明,大多数遗传变异存在于群体内,而不是在群体之间.

结论:

尽管遗传基因总体上很窄,但研究的牛加入在不同地区,亚种和改进状态之间显示出相当大的差异.
卡斯普基因型定型试验对于强大而准确的基因型定型是有效的.
这些发现支持在育种计划和基因库中选择和管理牛种子质.

关键词:

在KASP-SNP之间.牛 (Vigna unguiculata) 是一种植物.遗传多样性遗传多样性胚胎细胞质的胚胎细胞质.人口结构人口结构.

更多相关视频

Genotyping of Plant and Animal Samples without Prior DNA Purification

Genotyping of Plant and Animal Samples without Prior DNA Purification

Published on: September 24, 2012

An Allelotyping PCR for Identifying Salmonella enterica serovars Enteritidis, Hadar, Heidelberg, and Typhimurium

An Allelotyping PCR for Identifying Salmonella enterica serovars Enteritidis, Hadar, Heidelberg, and Typhimurium

Published on: July 22, 2011

相关概念视频

Comparing Copy Number Variations and SNPs

Comparing Copy Number Variations and SNPs

Sequencing of the human genome has opened up several best-kept secrets of the genome. Scientists have identified thousands of genome variations that exist within a population. These variations can be a single nucleotide or a larger chromosomal variation.
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...

Single Nucleotide Polymorphisms-SNPs

Single Nucleotide Polymorphisms-SNPs

A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...