整合生物学期刊网

Plant Diversity ›› 2010, Vol. 32 ›› Issue (S17): 74-80.

• 研究论文 • 上一篇    下一篇

夏蜡梅遗传多样性迁地保护取样策略研究

 陈香波1, 田旗2   

  1. 1 上海市园林科学研究所,上海200232;2 上海辰山植物园,上海201602
  • 出版日期:2010-12-25 发布日期:2011-01-28
  • 基金资助:

    国家环保部专项“中国重要观赏植物种质资源调查”(物种08二31)、上海市绿化和市容管理局项目“夏蜡梅引种及栽培应用技术研究”(G060208)

Study on the Sampling Strategy of Sinocalycanthus chinensis for Exsitu Conservation of Genetic Diversity

 CHEN  Xiang-Bo-1, TIAN  Qi-2   

  1. 1 Shanghai Landscape Gardening Research Institute, Shanghai 200232, China;
    2 Chenshan Botanical Garden, Shanghai 201602, China
  • Online:2010-12-25 Published:2011-01-28
  • Supported by:

    国家环保部专项“中国重要观赏植物种质资源调查”(物种08二31)、上海市绿化和市容管理局项目“夏蜡梅引种及栽培应用技术研究”(G060208)

摘要:

采用ISSR分子标记技术分析夏蜡梅天然群体的遗传多样性及空间遗传结构并在此基础上利用计算机模拟取样,以保留95%以上天然群体等位基因为标准制定出夏蜡梅遗传多样性的取样策略,即采集6个群体,群体抽样比例为30%,居群取样时应适当控制采种间距在26 m以上。采种实施迁地保护后,后代群体检测证实该取样策略能够有效保留原始群体的遗传多样性,由此探讨了濒危植物系统迁地保护的采样模式与技术措施。

关键词: 夏蜡梅, 遗传多样性, 迁地保护, 取样策略

Abstract:

By analysis of genetic diversity and population genetic structure in natural populations of Sinocalycanthus chinensis with intersimple sequence repeat(ISSR) technique, the sampling strategy were determined based on the gene capture curve of 95% allele captured. The results are as follows: 6 populations to be sampled, the sampling proportion should be 30% and the distance between the sampled individuals are best of 26 m above. After seeds sampling and conduction of Exsitu conservation, the genetic diversity of the offspring population were evaluated that it conserved the genetic diversity of the natural populations effectively. Therefore, the systemic sampling method of endangered plants for Exsitu conservation of genetic diversity were discussed.

Key words: Sinocalycanthus chinensis, Genetic diversity, Exsitu conservation, Sampling strategy

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