薇菜SSR分子标记的开发及遗传多样性初步探讨

赵杰; 王玢琪; 贾晓; 童益琴; 何义发; 葛台明

doi:10.11913/PSJ.2095-0837.2015.60801

薇菜SSR分子标记的开发及遗传多样性初步探讨

1.
中国地质大学(武汉)湿地演化与生态恢复湖北省重点实验室, 武汉 430074
2. 湖北民族学院林学园艺学院, 湖北恩施 445000

基金项目: 国家自然科学基金重点项目(40930210)。

详细信息

作者简介:
赵杰(1989-),男,硕士研究生,研究方向为生物化学与分子生物学(E-mail:zj1989890616@126.com)。

中图分类号: Q75
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出版历程
- 收稿日期: 2015-05-28
- 发布日期: 2015-12-27

Development of SSR Markers to Assess Genetic Diversity in Osmunda japonica Thunb.

1.
Hubei Key Laboratory of Wetland Evolution and Ecological Restoration, China University of Geosciences, Wuhan 430074, China
2. School of Forestry and Horticulture, Hubei University for Nationalities, Enshi, Hubei 445000, China

摘要

摘要: 利用改良FIASCO法(Fast Isolation by AFLP Sequences COntaining repeats)开发出的9对多态性SSR引物评价了薇菜(Osmunda japonica Thunb.)2个野生居群(庐山和恩施)、1个栽培居群(恩施)的遗传多样性和遗传分化水平。结果显示,9个SSR标记在3个薇菜居群中共检测到47个等位基因,每个SSR位点的平均等位基因数为5.222个,观测杂合度和期望杂合度分别为0.000 ~ 0.944和0.577 ~ 0.834,香农指数为0.962 ~ 1.860,表明各SSR位点多态性较高;各居群的平均期望杂合度均大于平均观测杂合度且种内近交系数均为正值,说明3个薇菜居群中都存在非随机交配现象;对各居群的相关遗传多样性参数分析表明,恩施野生居群遗传多样性最高,而其栽培居群最低;庐山野生居群与恩施野生居群间遗传分化系数为0.092,说明两地野生薇菜居群的遗传分化程度较低,AMOVA分析也表明遗传变异主要存在于野生居群内部。
- 薇菜 /
- 遗传多样性 /
- SSR /
- FIASCO
Abstract: Nine SSR markers developed by a modified FIASCO (Fast Isolation by AFLP Sequences COntaining repeats) method were used to analyze the genetic diversity and differentiation of three Osmunda japonica Thunb. populations,including two wild populations from Lushan and Enshi and one cultured population from Enshi. A total of 47 alleles were detected in the three populations, with a mean N_A(number of alleles) of 5.222. The observed heterozygosity and expected heterozygosity were 0.000-0.944 and 0.577-0.834, respectively. The Shannon index ranged from 0.962 to 1.860. Results suggested that the microsatellite loci were highly polymorphic. For each population, the average expected heterozygosity was higher than that of the observed heterozygosity, and the population inbreeding polymorphism coefficient was positive, indicating the existence of non-random mating. For the three populations, the wild population from Enshi harbored the most abundant genetic diversity, while the cultured population had the lowest. Low levels of genetic differentiation were found between the two wild populations (F_ST＝0.092), which was supported by AMOVA analysis.
- Osmunda japonica Thunb. /
- Genetic diversity /
- Simple sequence repeat /
- Fast Isolation by AFLP Sequences COntaining repeats

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薇菜SSR分子标记的开发及遗传多样性初步探讨

作者简介: 赵杰(1989-),男,硕士研究生,研究方向为生物化学与分子生物学(E-mail:zj1989890616@126.com)。

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Development of SSR Markers to Assess Genetic Diversity in Osmunda japonica Thunb.

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作者简介:
赵杰(1989-),男,硕士研究生,研究方向为生物化学与分子生物学(E-mail:zj1989890616@126.com)。