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Genetic Diversity Analysis of Pear Genus in Shanxi Province by SSR Marker(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2015年16
Page:
11-17
Research Field:
Publishing date:

Info

Title:
Genetic Diversity Analysis of Pear Genus in Shanxi Province by SSR Marker
Author(s):
QU Yongqing; WANG Ran; MA Chunhui; LI Dingli; SONG Jiankun
(College of Horticulture，Qingdao Agricultural University，Qingdao，Shandong 266109)
Keywords:
pear; wild resource; SSR; genetic diversity
PACS:
-
DOI:
10.11937/bfyy.201516003
Abstract:
To explore the genetic diversity of wild pear genus in Shanxi Province，the genetic diversity of 50 wild simples of Pyrus were analyzed using SSR molecular marker technique in this study，the genetic diversity of 50 wild pear genus were analyzed by SSR molecular marker technique.The results showed that，236 alleles were amplified by 40 pairs of SSR primers and 5.90 alleles were amplified by per primers.The genetic diversity analysis showed that the genetic diversity indexes varied from 0.276 2 to 0.431 9，the expected heterozygosity were 0.335 0 to 0.775 0，and the polymorphism information content ranged from 0.236 8 to 0.431 2.The diversity of the 50 wild pear resources were showed high by the four parameters.The clustering analysis results showed that the similarity coefficient of the 50 cultivars ranged from 0.444 9 to 0.839 0，all the cultivars were divided into four groups at the similarity coefficient of 0.57，the cultivars of group I belonged to Pyrus calleryana，the cultivars of group II，III and IV belonged to Pyrus betulaefolia.The most cultivars of Baijia mountain and Jiang county belonged to the group II and group III，however，all the cultivars of Taigu county belonged to group IV，which accorded with the geographic distribution；we also found new Pyrus betulaefolia with big fruit and green skin.

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Last Update: 2015-09-01