华北农学报 ›› 2014, Vol. 29 ›› Issue (6): 1-5. doi: 10.7668/hbnxb.2014.06.001

所属专题: 白菜

• 论文 •    下一篇

一个新的白菜苗期TuMV-C4抗性主效QTL定位及连锁分子标记开发

田希辉1,2, 于拴仓2, 苏同兵2, 张凤兰2, 余阳俊2, 张德双2, 赵岫云2, 汪维红2   

  1. 1. 北京农学院 植物科学技术学院, 北京 102206;
    2. 北京市农林科学院蔬菜研究中心, 农业部华北地区园艺作物生物学与种质创制重点实验室, 北京 100097
  • 收稿日期:2014-10-17 出版日期:2014-12-28
  • 通讯作者: 张凤兰(1964-),女,山东莱西人,研究员,博士,主要从事蔬菜遗传育种和分子生物学研究。
  • 作者简介:田希辉(1988-),男,山东泰安人,在读硕士,主要从事蔬菜分子育种研究。
  • 基金资助:
    科技部科技支撑项目(2012BAD50G01;2012BAD02B01);科技部“863”项目(2012AA020103;2012AA100103);国家大宗蔬菜产业技术体系(CARS-25-A-11)

Development of Molecular Markers Linked to a Novel QTL for TuMV-C4 Resistance in Brassica rapa L.ssp. pekinensis

TIAN Xi-hui1,2, YU Shuan-cang2, SU Tong-bing2, ZHANG Feng-lan2, YU Yang-jun2, ZHANG De-shuang2, ZHAO Xiu-yun2, WANG Wei-hong2   

  1. 1. Plant Science and Technology College, Beijing University of Agriculture, Beijing 102206, China;
    2. Beijing Vegetable Research Center, Beijing Academy of Agriculture and Forestry Sciences, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (North China) Ministry of Agriculture, Beijing 100097, China
  • Received:2014-10-17 Published:2014-12-28

摘要: 为寻找与TuMV抗性基因紧密连锁的分子标记,选用高抗病毒病大白菜自交系91-112和高感病毒病自交系T12-19以及由二者为双亲构建的包含100个株系的DH群体为材料,通过SSR和InDel标记的遗传分析,在A09上定位了一个新的与大白菜苗期TuMV-C4抗性相关的主效QTL位点 BrTuA09。在此基础上,针对该QTL位点所在的标记区间,根据作图群体双亲的重测序结果,设计合成27对引物,其中11个InDel在双亲间具有多态性,且条带单一、扩增稳定;连锁分析发现,11个InDel标记均被定位在A09连锁群上 BrTuA09 的置信区间。利用BC1群体进行标记验证发现,这些标记对高抗单株选择的准确率均达到78%以上,可应用于分子标记辅助选择,为大白菜TuMV抗病分子育种奠定了良好的基础。

关键词: 大白菜, QTL, TuMV, 分子标记

Abstract: Our research constructed a molecular genetic map with a line 91-112 (highly resistant to TuMV-C4),a highly susceptible line T12-19 and the DH population derived from microspore culture of F1 (91-112×T12-19).A total of 45 markers were mapped to the A09 chromosome,and a new QTL-BrTuA09 controlling TuMV-C4 resistance was identified.On this basis,27 pairs of primers were designed by screening the InDel loci on A09 chromosome of Chinese cabbage based on genome re-sequencing.The results showed that distinct PCR amplification products were obtained from the InDel markers.Among these markers,11 InDel were polymorphic on the tested parent materials,and mapped to the A09 chromosome.By linkage analysis,these markers were tightly linked to the QTL-BrtuA09.The studies showed that these markers can be applied in marker-assisted selection in Chinese cabbage hybrid breeding programs and improve the resistance to TuMV-C4.

Key words: Chinese cabbage, QTL, TuMV, Molecular markers

中图分类号: 

引用本文

田希辉, 于拴仓, 苏同兵, 张凤兰, 余阳俊, 张德双, 赵岫云, 汪维红. 一个新的白菜苗期TuMV-C4抗性主效QTL定位及连锁分子标记开发[J]. 华北农学报, 2014, 29(6): 1-5. doi: 10.7668/hbnxb.2014.06.001.

TIAN Xi-hui, YU Shuan-cang, SU Tong-bing, ZHANG Feng-lan, YU Yang-jun, ZHANG De-shuang, ZHAO Xiu-yun, WANG Wei-hong. Development of Molecular Markers Linked to a Novel QTL for TuMV-C4 Resistance in Brassica rapa L.ssp. pekinensis[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2014, 29(6): 1-5. doi: 10.7668/hbnxb.2014.06.001.

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