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园艺学报 ›› 2008, Vol. 35 ›› Issue (8): 1227-1232.

• 研究简报 • 上一篇    下一篇

云南蔷薇属部分种质资源的SSR遗传多样性研究

唐开学1,2; 邱显钦2; 张 颢2;李树发2;王其刚2;蹇洪英2;鄢 波2;黄兴奇1,3*   

  1. 1云南大学生命科学学院,昆明650091;2云南省农业科学院花卉研究所,昆明 650205;3云南省农业生物技术重点实验室,昆明650223)
  • 收稿日期:2008-04-02 修回日期:2008-07-16 出版日期:2008-08-25 发布日期:2008-08-25
  • 通讯作者: 黄兴奇

Study on Genetic Diversity of Some Rosa Germplasm in Yunnan Based on SSR Markers

TANG Kai-xue1,2, QIU Xian-qin2, ZHANG Hao2, LI Shu-fa2, WANG Qi-gang2, JIAN Hong-ying2, YAN Bo2, and HUANG Xing-qi1,3*
  

  1. (1College of Life Sciences, Yunnan University, Kunming 650091,China;2 Flower Research Institute, Yunnan Academy of Agricultural Sciences, Kunming 650205, China;3 Yunnan Key Laboratory of Agricultural Biotechnology, Kunming 650223, China)
  • Received:2008-04-02 Revised:2008-07-16 Online:2008-08-25 Published:2008-08-25
  • Contact: HUANG Xing-qi

摘要:

利用简单重复序列SSR(Simple Sequence Repeat)标记技术对42份蔷薇属(Rosa L.)种质资源(包括13份野生种、变种、变型及29份栽培品种)的遗传多样性进行了研究。用筛选出的18对SSR引物对42份材料DNA进行PCR扩增,在18个位点共检测到148个等位基因,每一位点的等位基因变幅为6~14个,平均8.2个。材料间遗传相似系数变化范围为0.282~0.892,表明在分子水平上云南省蔷薇属植物具有丰富的遗传多样性。本研究发现,在相似系数为0.456时,基于SSR标记的聚类分析可以将 13个蔷薇野生种明显分为5个组,这与植物形态学分类结果大体一致。在遗传相似系数为0.43水平上,聚类分析将42份供试材料分为5大组群;同时初步探讨了野生种之间以及野生种与栽培品种之间的遗传亲缘关系。

关键词: 蔷薇属, 遗传多样性, 亲缘关系, SSR

Abstract: The genetic diversity of 42 Rosa germplasm including 13 accessions of wild species (varieties , forms) and 29 rose cultivars in Yunnan was studied by simple sequence repeat (SSR). Eighteen pairs of SSR primers were used in PCR amplification with genomic DNA as template. A total of 148 alleles were detected at 18 loci. The number of alleles per locus ranged from 6 to 14, with an average of 8.2. The genetic similar coefficient ranged from 0.282 to 0.892, which showed that the genetic diversity among 42 rose accessions in Yunnan was abundant based on SSR molecular markers. The 13 Rosa species could be divided into five groups obviously based on the UPGMA cluster at the similar coefficient 0.456,which is consensus of botanical morphological classification. All the species and cultivars were divided into five groups at the similar coefficient of 0.43 by UPGMA cluster. Meanwhile genetic relationships between 42 rose accessions were discussed preliminarily.

Key words: Rosa L., genetic diversity, genetic relationship, SSR

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