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园艺学报 ›› 2002, Vol. 29 ›› Issue (3): 229-232.

• 研究论文 • 上一篇    下一篇

RAPD标记构建芥蓝×甘蓝分子标记连锁图

陈书霞1;王晓武2;方智远2;程智慧1;孙培田2
  

  1. (1 西北农林科技大学园艺系, 杨凌712100; 2 中国农业科学院蔬菜花卉研究所, 北京100081)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2002-06-25 发布日期:2002-06-25

Construction of Molecular Linkage Map of Brassica oleracea var. alboglabra ×B. oleracea var. capitata by RAPD analysisAbstract : Key words :

Chen Shuxia1;Wang Xiaowu2; Fang Zhiyuan2; Cheng Zhihui1; and Sun Peitian2   

  1. (1 Department of Horticulture, Northwest Science and Technology University of Agriculture and Forestry, Yangling 712100, China; 2 Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2002-06-25 Published:2002-06-25

摘要: 以芥蓝C100-12×甘蓝秋50-Y7为杂交组合, 构建了F2 作图群体, 利用300 个随机引物对两亲本进行了RAPD 检测, 共筛选到150 个RAPD 引物在亲本间表现多态, 多态引物的比率为58. 3 %。共分析了52个引物产生的96 个多态性RAPD 标记在该群体中的遗传。96 个RAPD 标记中有94 个在F2 群体中的分离比符合3∶1 , 说明该群体适合于QTL 分析, 共发现两对共分离的RAPD 标记。利用该作图群体构建了甘蓝的基本遗传图谱。该图谱由9 个主要的连锁图构成, 覆盖基因总长度约为555. 7 cM。

关键词: 分子标记, 连锁图, RAPD, 甘蓝

Abstract: The hybrids were produced by a cross between Brassica oleracea var. capitata and B . oleracea var. alboglabra. A total of 300 random primers were initially screened using two parents , of which 150 showed polymorphism between two parents. The ratio of polymorphism primers is 58. 3 %. 96 F2 individuals were analyzed using 52 10 bp random primers to select polymorphic , stable and repeatable fragment in preliminary segregation
analysis. Most (95. 8 %) of the segregating fragments followed the expected 3∶1 Mendelian segregation ; 4. 2 % showed significant segregation distortion. This shows that the population is suited for analysis of QTLs. There were two pairs of RAPD markers which showed cosegregation. A genetic linkage map of B. oleracea was constructed based on the segregation of 96 RAPD polymorphic loci in one F2 population of B. oleracea var. capitata ×B.oleracea var. alboglabra. The genetic markers defined nine linkage groups, covering 555. 7 recombination units.

Key words: Molecular linkage map, RAPD, Brassica oleracea var. capitata

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