相关实验视频

Updated: Jul 15, 2025

Determination of Self-Incompatibility and Inter-Incompatibility Relationships in Citrus Using Manual Pollination, Microscopy, and S-Genotype Analyses

Determination of Self-Incompatibility and Inter-Incompatibility Relationships in Citrus Using Manual Pollination, Microscopy, and S-Genotype Analyses

Published on: June 30, 2023

对一些果品种的遗传多样性的SSR和RAPD标志物的比较评估

Mohammed A A Hussein¹, Manal Eid¹, Mehdi Rahimi²

¹Department of Botany (Genetic Branch), Faculty of Agriculture, Suez Canal University, Ismailia, Egypt.

|October 4, 2023

概括

简单序列重复 (SSR) 和随机放大多态DNA (RAPD) 标记在17种果品种中显示出显著的遗传多样性. SSR标记物在评估遗传变异性和为未来研究确定信息标记物方面被证明更有效.

科学领域:

植物遗传学植物遗传学
分子生物学分子生物学
农业科学农业科学

背景情况:

遗传改进依赖于种群变异性;分子标记物对于多样性分析至关重要.
了解遗传分歧有助于品种识别和育种策略.
果 (Mangifera indica L.) 的遗传资源需要彻底的表征才能得到有效的利用.

研究的目的:

评估和比较简单序列重复 (SSR) 和随机放大多态DNA (RAPD) 标记物的有效性,以评估17种果品种的遗传多样性.
为未来的遗传研究和标记器辅助选择确定最有信息的标记物.
评估相似系数对品种聚类的影响.

主要方法:

利用30个SSR和30个RAPD标记来分析17种果品种的遗传差异.
计算的遗传多样性参数,包括等位基因/波段多态和多态信息内容 (PIC).
评估了简单匹配 (SM) 和子相似系数对基因型聚类的影响.

主要成果:

与RAPD标记物相比,SSR标记物产生了100%的多态等位基因 (共192个),与RAPD标记物相比,平均PIC (0.735) 高 (83%的多态带,0.378 PIC).
与RAPD标志物相比,SSR标志物提供了优越的遗传多样性参数值.
特定的RAPD (OPA_01,OPM_12,OPO_12) 和SSR (MIAC_4,MIAC_5,mMiCIR_21) 标记被确定为具有高度信息性的.
在研究组中",Zebda"品种表现出最大的遗传多样性.

结论:

在评估果遗传多样性方面,SSR标记物比RAPD标记物更有效,更具信息性.
选择的信息标记可以应用于遗传映射和果改善的标记辅助选择.
"Zebda"品种代表了用于育种计划的遗传多样性的宝贵来源.

关键词:

进行比较评估.子和简单的匹配系数遗传多样性遗传多样性果 (Mango) 果 (Mango) 是一个很好的食物.人口结构人口结构在RAPD中,使用的是RAPD.在SSR标记器上.

更多相关视频

Determination of Self- and Inter-incompatibility Relationships in Apricot Combining Hand-Pollination, Microscopy and Genetic Analyses

Determination of Self- and Inter-incompatibility Relationships in Apricot Combining Hand-Pollination, Microscopy and Genetic Analyses

Published on: June 16, 2020

Identifying Mutations by High Resolution Melting in a TILLING Population of Rice

Identifying Mutations by High Resolution Melting in a TILLING Population of Rice

Published on: September 2, 2019

相关概念视频

Modern Molecular Taxonomy

Modern Molecular Taxonomy

Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...

Evolutionary Relationships through Genome Comparisons

Evolutionary Relationships through Genome Comparisons

Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...