南京林业大学学报(自然科学版) ›› 2017, Vol. 60 ›› Issue (04): 191-196.doi: 10.3969/j.issn.1000-2006.201611006

• 研究简报 • 上一篇    下一篇

柳杉无性系指纹图谱的构建及遗传多样性分析

骆 鹏1,曹玉婷1,莫家兴1,翁怀峰2 ,施季森1,徐 进1*   

  1. 1.南方现代林业协同创新中心, 南京林业大学林学院,江苏 南京 210037;
    2.福建省霞浦杨梅岭林场, 福建 霞浦 355100
  • 出版日期:2017-08-18 发布日期:2017-08-18
  • 基金资助:
    收稿日期:2016-11-07 修回日期:2017-03-27
    基金项目:国家林业公益性行业科研专项项目(201304104); 江苏省“六大人才高峰”项目(2014-NY-013); 江苏高校优势学科建设工程资助项目(PARD); 福建省林木种苗科技攻关五期项目
    第一作者:骆鹏( nohimdo@126.com)。*通信作者:徐进( xjinhsh@njfu.edu.cn),教授。
    引文格式:骆鹏,曹玉婷,莫家兴,等. 柳杉无性系指纹图谱的构建及遗传多样性分析[J]. 南京林业大学学报(自然科学版),2017,41(4):191-196.

Analysis of genetic diversity and construction of DNA fingerprinting of clones in Cryptomeria fortune

LUO Peng1, CAO Yuting1, MO Jiaxing1, WENG Huaifeng2, SHI Jisen1, XU Jin1*   

  1. 1. Co-Innovotion Center for the Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, 210037, China;
    2 State-owned Forest Farm of Fujian Yangmeiling, Xiapu 355100, China
  • Online:2017-08-18 Published:2017-08-18

摘要: 【目的】为了构建柳杉无性系的DNA指纹图谱,准确区分柳杉无性系。【方法】利用SSR标记分析了柳杉89个无性系的遗传多样性和指纹图谱。【结果】11对引物共检测出53个等位点,平均每个SSR位点有5个,变化范围为3~6个; 有效等位基因数(Ne)变化范围为1.887 0~4.295 6,平均为3.041 1; Shannon信息指数(I)变化范围为0.774 9~1.556 3,平均为1.208 1。表明SSR标记具有较高的多态性。根据SSR标记特点及引物的顺序,将SSR引物扩增统计的“0”、“1”转换成基因型,通过不同基因型组合,构建了柳杉89个无性系的 DNA 分子指纹图谱,使每个无性系都获得了 1 个 22 位数的指纹图谱号码,同时基于个体间的遗传距离将柳杉89个无性系分为 5 类。【结论】SSR标记适用于柳杉无性系遗传多样性分析及鉴定,柳杉的遗传多态性处于中等偏高水平。

Abstract: 【Objective】Molecular fingerprinting and genetic diversity analysis are important for protecting and managing superior germplasm resources, as well as for identifying superior clones. 【Method】In the present study, 11 SSR primer pairs were used to assess the genetic diversity and DNA fingerprints of 89 C. fortunei clones. 【Result】A total of 53 putative alleles were detected from 11 pairs of primers, with a mean of five putative alleles per locus, ranging from three to six. The number of effective alleles(Ne)ranged from 1.887 0 to 4.295 6, with a mean of 3.041 1, and the Shannon's information index ranged from 0.774 9 to 1.556 3, with a mean of 1.208 1. These findings indicate that SSR markers in C. fortunei exist a relative high polymorphism. Furthermore, according to the characteristics of the SSR markers and primer sequences, the present(recorded as 1)and absent(recorded as 0)collected from amplification by SSR markers were transferred into genetic types. By combining different genetic types code, we established DNA fingerprints of 89 C. fortunei clones, and attached a 22-digit fingerprint number to each clone. The 89 clones were also separated into five clusters based on genetic distance. 【Conclusion】SSR markers are suitable for analyzing and identifying the genetic diversity of C. fortune, and C. fortune shows moderate to high genetic diversity.

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