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园艺学报 ›› 2022, Vol. 49 ›› Issue (3): 622-632.doi: 10.16420/j.issn.0513-353x.2021-0267

• 研究报告 • 上一篇    下一篇

西州密系列甜瓜SSR指纹图谱构建及聚类分析

李超, 杨英, 陈伟, 郑贺云, 廖新福, 孙玉萍*()   

  1. 新疆维吾尔自治区葡萄瓜果研究所,新疆鄯善 838200
  • 收稿日期:2021-04-28 修回日期:2022-01-03 出版日期:2022-03-25 发布日期:2022-03-25
  • 通讯作者: 孙玉萍 E-mail:1501218842@qq.com
  • 基金资助:
    国家现代农业产业技术体系建设专项资金项目(CARS-25);新疆维吾尔自治区公益性科研院所基本科研业务经费项目(KY2017104);新疆维吾尔自治区公益性科研院所基本科研业务经费项目(KY2020062);新疆维吾尔自治区天山青年计划项目(2020Q140);新疆维吾尔自治区天山创新团队计划项目(2021D14009)

Construction of DNA Fingerprinting and Clustering Analysis with SSR Markers for the Muskmelon of Xizhoumi Series

LI Chao, YANG Ying, CHEN Wei, ZHENG Heyun, LIAO Xinfu, SUN Yuping*()   

  1. Research Institute of Grape and Melon of Xinjiang Uighur Autonomous Region,Shanshan,Xinjiang 838200,China
  • Received:2021-04-28 Revised:2022-01-03 Online:2022-03-25 Published:2022-03-25
  • Contact: SUN Yuping E-mail:1501218842@qq.com

摘要:

为利用SSR标记技术建立西州密系列甜瓜品种的DNA指纹图谱,实现快速准确地鉴定品种。利用18份西州密系列甜瓜品种(系)对73对甜瓜SSR引物进行筛选,获得9对扩增稳定、呈共显性、条带清晰、多态性好的引物,其中每对引物可检测到3 ~ 6个等位变异,平均4.33个;多态性信息含量(PIC)平均值为0.45,变化范围为0.20 ~ 0.78。利用C30、MU5499、MU5554-1、SSR04219、SSR12083等5对SSR核心引物有效区分所有供试材料,并为每份材料建立了一份独特的指纹图谱,其中‘西州密25号’母本与‘西州密17号’母本为同一材料。同时对18份材料进行了聚类分析,其相似系数为0.70 ~ 1.00。在相似性系数0.74处,可将供试材料分为三大类群。SSR引物适用于构建西州密系列甜瓜品种(系)的DNA指纹图谱,可为其品种鉴定提供科学依据。

关键词: 厚皮甜瓜, SSR, 指纹图谱, 聚类分析

Abstract:

In order to identify the cultivars quickly and accurately,DNA fingerprinting of 18 muskmelon cultivars of Xizhoumi series was constructed by using SSR marker technology. Using 18 cultivars(lines),highly informative and polymorphic simple sequence repeat(SSR)primers were screened. Out of the 73 SSR primer pairs,nine pairs including SSR12083,MU5554-1,TJ10,PM3,MU5499,SSR04219,SSR04632,SSR22874 and C30 were selected,and they could generate stable,clearly and codominant bands. Each primer pair could generate 3-6 polymorphic bands with an average of 4.33. The average polymorphism information content(PIC)was 0.45 with a range from 0.20 to 0.78. Five selected primer pairs(C30,MU5499,MU5554-1,SSR04219 and SSR12083)had established the fingerprinting of the 18 accessions and their unique fingerprint. We found that the female parent of ‘Xizhoumi 25’was the same as the female parent of‘Xizhoumi 17’. Clustering analysis showed that the similarity coefficient of the 18 accessions ranged from 0.70 to 1.00. They can be divided into three groups at 0.74. Above results indicated that the DNA fingerprinting could provide scientific basis for identification of Xizhoumi muskmelon.

Key words: muskmelon, SSR, fingerprinting, clustering analysis

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