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Genetic Diversity and Core Germplasm Research of 144 Munake Grape Resources Using 22 Pairs of SSR Markers

文献类型： 外文期刊

作者： Liu, Shiqing 1 ; Zhong, Haixia 3 ; Zhang, Fuchun 3 ; Wang, Xiyong 1 ; Wu, Xinyu 3 ; Wang, Jiancheng 1 ; Shi, Wei 1 ;

作者机构： 1.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Key Lab Ecol Safety & Sustainable Dev Arid Lands, Urumqi 830011, Peoples R China

2.Shihezi Univ, Coll Life Sci, Shihezi 832003, Peoples R China

3.Xinjiang Acad Agr Sci, Inst Hort Crops, Urumqi 830091, Peoples R China

4.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Turpan Eremophytes Bot Garden, Urumqi 830011, Peoples R China

关键词： genetic analysis; grapes; Munake; SSR marker; core germplasm collection

期刊名称：HORTICULTURAE （ 影响因子：3.1； 五年影响因子：3.4 ）

ISSN：

年卷期： 2023 年 9 卷 8 期

页码：

收录情况： SCI

摘要： The Munake grape is a local variety of grape that is widely distributed in Xinjiang, China. This study aims to clarify the genetic structure of the Munake grape population, characterize genetic differentiation and gene flow among populations, gather germplasm, and establish the core germplasm collection. In total, 144 samples were collected from eight geographic populations. Twenty-two SSR markers were used to characterize the genetic diversity as well as the genetic structure of Munake grape germplasm and to establish the core germplasm collection. At each site, the average number of effective alleles (Ne) was 5.019. Overall, genetic diversity was high in the various geographic populations of Munake grapes. Polymorphic information content (PIC) ranged from 0.501 to 0.908, with an average of 0.728. Estimates of genetic differentiation and gene flow indicated that the Artux population had significant genetic differences from the other populations. Screening results indicated that a sampling proportion of 95% of the sample was required to achieve 100% allelic coverage, or a sampling proportion of 65% for 95% allelic coverage. This analysis was based on conventional genetic diversity indicators, with a core germplasm diversity index of 95% coverage. Characterization of the genetic diversity of germplasm from 144 Munake grapes not only provides valuable resources for future genetic mapping and functional genome research, but also facilitates the utilization of core germplasm and molecular breeding of Munake grapes.

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