生物技术通报 ›› 2014, Vol. 0 ›› Issue (6): 101-105.

• 研究报告 • 上一篇    下一篇

青花菜及其近缘种亲缘关系SRAP标记分析

荆赞革1, 裴徐梨2, 唐征1, 张小玲1, 罗天宽1, 刘庆1, 朱世杨1   

  1. (1.温州科技职业学院 浙南作物育种重点实验室,温州 325006;2.南京农业大学 作物遗传与种质创新国家重点实验室,南京 210095)
  • 收稿日期:2013-10-23 出版日期:2014-06-25 发布日期:2014-06-25
  • 作者简介:荆赞革,男,博士研究生,助理研究员,研究方向:蔬菜遗传育种与生物技术;E-mail:jingzange@aliyun.com
  • 基金资助:
    浙江省自然基金项目(LY12C15009),浙江省农业新品种选育重大科技专项(2012C12903-3-3),浙江省重大科技项目(2010C12004),温州科技局项目(N20090016)

Genetic Diversity and Relationship Analysis of Broccoli with Its Related Species by SRAP Markers

Jing Zange1,Pei Xuli2,Tang Zheng1,Zhang Xiaoling1,Luo Tiankuan1,Liu Qing1,Zhu Shiyang1   

  1. (1. Zhenan Key Laboratory of Crop Breeding, Wenzhou Vocational College of Science and Technology, Wenzhou 325006;2. State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultral University, Nanjing 210095)
  • Received:2013-10-23 Published:2014-06-25 Online:2014-06-25

摘要: 利用SRAP分子标记技术,对青花菜与其近缘种进行遗传多样性分析。28对SRAP引物共产生302条谱带,其中多态性谱带203条,多态率为67.22%,表明种质间存在较高的多态性。相似系数分析表明,其变异范围为0.461 5-0.900 6,平均遗传相似系数为0.693 6。‘绿地’和‘矮抗青’之间的亲缘关系最远,遗传相似系数为0.461 5;‘Wzvcst-09-224’和‘Wzvcst-09-225’亲缘关系最近,遗传相似系数为0.900 6。聚类分析可将16个材料分为两大类,第Ⅰ类包括芸薹属甘蓝种蔬菜,第Ⅱ类为芸薹属白菜种。揭示了青花菜及其近缘变种间具有部分相似的遗传基础,亲缘关系较近。结果表明,同一地域或来源的材料间具有较为相近的遗传背景,亲缘关系相对较近。研究结果有助于青花菜与其近缘种间种质资源分类和优异基因利用,加速青花菜新品种选育进程。

关键词: 青花菜, SRAP, 遗传多样性, 亲缘关系分析

Abstract: In this study, we analyzed genetic diversity and relationship between broccoli and its related species by SRAP molecular markers. Using 28 SRAP primer combinations, a total of 302 amplified fragments were detected and 203 were polymorphic, with polymorphism rate 67.22%, indicating high polymorphism among these germplasm. Similarity coefficient analysis showed that the variation ranged from 0.461 5 to 0.900 6, and the average genetic similarity coefficient was 0.693 6. ‘Lü di’ and ‘Ai kang qing’ had the farthest genetic relationship with genetic similarity coefficient 0.461 5. By contrast, the relationship was closest between ‘Wzvcst-09-224’ and ‘Wzvcst-09-225’, with genetic similarity coefficient 0.900 6. Cluster analysis divided 16 germplasm into two major clusters. Class I contained Brassica oleracea, and class II only had one member Chinese no heading cabbage. The result of cluster indicated that the genetic basis had more similarity between broccoli and its related species, with a closer relationship, comparing with Brassica campestris ssp. chinensis Makino. The results also showed that the same geographic or origin could make the germplasm had relatively similar genetic background and closer genetic relationship. The research could be helpful to germplasm classification and excellent genes utilization for broccoli and its relative species, to speed up the breeding process.

Key words: Broccoli, SRAP, Genetic diversity, Genetic relationship