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园艺学报 ›› 2011, Vol. 38 ›› Issue (7): 1308-1316.

• 蔬菜 • 上一篇    下一篇

甜瓜重组自交系群体SSR遗传图谱构建及纯雌性基因定位

高美玲1,2,朱子成1,高 鹏1,栾非时1,*   

  1. (1东北农业大学园艺学院,哈尔滨150030;2齐齐哈尔大学生命科学与农林学院,黑龙江齐齐哈尔161006)
  • 收稿日期:2011-03-30 修回日期:2011-05-31 出版日期:2011-07-25 发布日期:2011-07-25
  • 通讯作者: 栾非时1,*

A Microsatellite-based Genetic Map of Melon and Localization of Gene for Gynoecious Sex Expression Using Recombinant Inbred Lines

GAO Mei-ling1,2,ZHU Zi-cheng1,GAO Peng1,and LUAN Fei-shi1,*   

  1. (1 College of Horticulture,Northeast Agricultural University,Harbin 150030,China;2College of Life Science,Agriculture and Forestry,Qiqihaer University,Qiqihaer,Heilongjiang 161006,China)
  • Received:2011-03-30 Revised:2011-05-31 Online:2011-07-25 Published:2011-07-25
  • Contact: LUAN Fei-shi1,*

摘要: 以甜瓜(Cucumis melo L.)纯雌株厚皮甜瓜品系WI998为母本,雌雄异花同株薄皮甜瓜品系3-2-2为父本杂交,通过单粒传得到了含有185个F6︰7家系的重组自交系分离群体,构建SSR分子遗传图谱。1 219对SSR引物在亲本间有多态性的为215对,多态率17.6%,构建的图谱共包含210个SSR标记,分属18个连锁群,覆盖基因组长度为937.1 cM,标记间平均距离为4.4 cM。将与性别表达密切相关的纯雌性基因(g)定位到了第1连锁群上,其两侧标记为NR3和MU8294_1,与g基因的遗传间距分别为1.2 cM和2.6 cM。

关键词: 甜瓜, 重组自交系群体, SSR, 遗传图谱, 纯雌性, 基因定位

Abstract: A recombinant inbred line(RIL)mapping population of melon,Cucumis melo L. comprising of 185 F6︰7 families was developed from a cross between the monoecious inbred line 3-2-2(AAGG)and the gynoecious inbred line WI998(AAgg)through single-seed descent(SSD). This RIL population was used to develop a linkage map with microsatellite(or simple sequence repeat,SSR)markers. Of 1 219 SSR markers screened,215(17.6%)were polymorphic between the two parental lines which were applied for linkage analysis in 185 RILs. The resulting genetic map consisted of 18 linkage groups spanning 937.1 cM with a mean marker interval of 4.4 cM. Two SSR markers,NR3 and MU8294_1 were identified flanking the g locus in linkage group 1 which was 1.2 cM and 2.6 cM away from the gynoecy gene,respectively.

Key words: melon, Cucumis melo L., RIL, SSR, genetic map, gynoecious, localization of gene

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