|本期目录/Table of Contents|

[1]刘春香,李钧敏,李红丽,等.匍匐茎克隆植物蛇莓的遗传多样性和遗传结构[J].江苏农业科学,2016,44(02):215-220.
 Liu Chunxiang,et al.Genetic diversity and structure of stoloniferous clonal plant Duchesnea indica (Andr.) Focke[J].Jiangsu Agricultural Sciences,2016,44(02):215-220.
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第44卷
期数:
2016年02期
页码:
215-220
栏目:
园艺与林学
出版日期:
2016-02-25

文章信息/Info

Title:
Genetic diversity and structure of stoloniferous clonal plant Duchesnea indica (Andr.) Focke
作者:
刘春香1 李钧敏2 李红丽1 罗芳丽1
1.北京林业大学自然保护区学院,北京 100083; 2.浙江省植物进化生态学与保护重点实验室,浙江台州 318000
Author(s):
Liu Chunxianget al
关键词:
蛇莓克隆生长遗传多样性简单重复序列基因型多样性遗传分化
Keywords:
-
分类号:
Q945.79
DOI:
-
文献标志码:
A
摘要:
采用8对简单重复序列(simple sequence repeat,SSR)引物对克隆植物蛇莓33个野生种群353个个体的遗传多样性及遗传结构进行分析。结果表明,参试的33个种群中的平均等位基因数(A)为2.841,平均多态性位点(PPL)为88.6%,平均期望杂合度(He)为0.494,平均Nei’s遗传多样性指数(h)为0.468。所有参试样本中共有223个基因型。该物种的克隆多样性和等位基因水平的变异均较高,各种群的平均基因型数(G)为6.758,平均克隆大小(N/G)为2.063,克隆多样性指数Simpson指数(D)为0.769,基因型均匀度(E)为0.769。基于分子的方差分析结果表明,蛇莓野生种群间和种群内的分化系数分别为0.55和0.45,这说明蛇莓种群间和种群内遗传分化均显著。STRUCTURE分析和基于Nei’s遗传一致度的UPGMA聚类结果表明,参试的33个野生种群可分为四大类群。Mantel相关性分析结果表明,种群间遗传距离与其地理距离不存在显著相关关系(r=0.052,P=0.150)。该研究结果说明蛇莓野生种群的遗传多样性高,所有种群均为多克隆种群,且基因型的局域性很强,其中82.6%的基因型为局部基因型,不存在广布基因型。物种水平的遗传差异主要表现在种群间,但在种群内也较高,这表明该物种在种群间和种群内在一定程度上能通过有性繁殖进行基因交流。蛇莓种群建群者的奠基者效应和所在位置生态因子对其遗传多样性和遗传结构的形成和进化具有重要的意义。
Abstract:
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备注/Memo

备注/Memo:
收稿日期:2015-01-16
基金项目:国家自然科学基金(编号:31200314、31470475);高等学校博士学科点专项科研基金新教师类资助(编号:20120014120001)。
作者简介:刘春香(1990—),女,湖南邵阳人,硕士研究生,主要从事克隆植物生态学研究。E-mail:chunxiangliu_1990@163.com。
通信作者:罗芳丽,女,四川都江堰人,博士,副教授,主要从事湿地生态学研究。E-mail:ecoluofangli@bjfu.edu.
更新日期/Last Update: 2016-02-25