华北农学报 ›› 2016, Vol. 31 ›› Issue (S1): 80-85. doi: 10.7668/hbnxb.2016.S1.014

所属专题: 甜瓜 生物技术

• 作物遗传育种·种质资源·生物技术 • 上一篇    下一篇

甜瓜抗霜霉病基因SSR分子标记

张学军1,2, 杨永1, 李寐华1, 杨俊涛1, 伊鸿平1,2   

  1. 1. 新疆农业科学院 哈密瓜研究中心, 新疆 乌鲁木齐 830091;
    2. 国家瓜类工程技术研究中心, 新疆 昌吉 831100
  • 收稿日期:2016-05-26 出版日期:2016-12-28
  • 作者简介:张学军(1980-),男,吉林四平人,副研究员,硕士,主要从事甜瓜西瓜抗病育种研究。
  • 基金资助:
    新疆维吾尔自治区高技术研究与发展项目(201411109);新疆农业科学院青年基金项目(xjnkq-2013036);国家西甜瓜产业技术体系项目(CARS-26-04)

SSR Markers Linked of the Resistance Gene for Downy Mildew in Cucumis melo ssp. melo

ZHANG Xuejun1,2, YANG Yong1, LI Meihua1, YANG Juntao1, YI Hongping1,2   

  1. 1. The Research Center of Hami-melon, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China;
    2. National Engineering Research Center for Cucurbits, Changji 831100, China
  • Received:2016-05-26 Published:2016-12-28

摘要: 为了研究甜瓜抗霜霉病资源T115抗性遗传规律,找到与抗病基因连锁的分子标记,并对抗病基因进行定位。以抗病资源T115和感病哈密瓜农家品种SP红心脆、F1、BCr、BCs、F2为材料,苗期接种甜瓜霜霉病进行抗性鉴定,基于ICuGI已构建遗传连锁图谱,应用集团分离法和1 090对甜瓜SSR引物进行连锁遗传分析。结果表明,T115对霜霉病的抗性属显性单基因控制,引物DM0073扩增出的特异性片段与抗病基因表现连锁关系,该片段大小为120 bp,与抗病基因遗传连锁距离为3.6 cM,并将抗病基因定位在LG1上。DM0073可作为甜瓜抗霜霉病分子育种的分子标记。

关键词: 甜瓜, 霜霉病, 抗病基因, SSR分子标记

Abstract: In order to study the inheritance of melon T115,founding the molecular markers linked to resistance genes and locating the resistance genes.Parental lines and(T115 SP Hongxincui) F1,F2,back cross populations BCr and BCs were scored for response to inoculation with[Pseudoperonospora cubensis (Berk.etCurt.) Rostov.].The simple sequence repeat(SSR) technique and bulk segregant analysis(BSA) were used to identify molecular markers linked to the resistance of melon downy mildew.A total 1 090 pairs SSR primers could detect the polymorphism between the resistant pool and susceptible pool which based on the ICuGI constructed genetic linkage map.The resistance to downy mildew in T115 was controlled by one single dominant gene. An unique 120 bp fragment was amplified with the primer DM0073.It was identified that was linked to resistance gene of T115 at a distance of 3.6 cM.The resistance gene was located to LG1.This SSR bands indicated that the marker could be useful for marker assisted selection in melon breeding for downy mildew resistance.

Key words: Cucumis melo ssp. melo, Downy mildew, Disease resistance gene, SSR marker

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引用本文

张学军, 杨永, 李寐华, 杨俊涛, 伊鸿平. 甜瓜抗霜霉病基因SSR分子标记[J]. 华北农学报, 2016, 31(S1): 80-85. doi: 10.7668/hbnxb.2016.S1.014.

ZHANG Xuejun, YANG Yong, LI Meihua, YANG Juntao, YI Hongping. SSR Markers Linked of the Resistance Gene for Downy Mildew in Cucumis melo ssp. melo[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2016, 31(S1): 80-85. doi: 10.7668/hbnxb.2016.S1.014.

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