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园艺学报 ›› 2006, Vol. 33 ›› Issue (1): 46-51.

• 研究论文 • 上一篇    下一篇

中国地方胡萝卜品种资源的核心样品构建

庄飞云;赵志伟;李锡香;胡鸿;方智远   

  1. (中国农业科学院蔬菜花卉研究所, 北京100081)
  • 收稿日期:2005-04-04 修回日期:2005-08-04 出版日期:2006-02-25 发布日期:2006-02-25

A Core Collection of Chinese Traditional Carrot Germplasm

Zhuang Feiyun;Zhao Zhiwei; L i Xixiang; Hu Hong;Fang Zhiyuan   

  1. ( Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China)
  • Received:2005-04-04 Revised:2005-08-04 Online:2006-02-25 Published:2006-02-25

摘要: 以340份我国地方胡萝卜品种为材料, 通过对4个数量性状和9个质量性状的评价进行聚类分组, 设定适宜的阈值, 以靠近阈值最近的材料作为候选样品, 分别按10%、15%和20%比例初步构建了胡萝卜3个核心种质。对3个核心样品13个性状基本参数与总体资源比较的结果表明, 3个核心样品的β - 胡萝卜素、干物质及维生素C的含量平均值均与总体资源存在显著差异, 但核心样品的4个数量性状与总体资源符合度(表型保留比例) 比较好。核心样品9个质量性状表现型频率与总体无显著差异, 符合度均达到了100%。随着取样比例的减少, 核心样品的地域分布迅速减少, 10%核心样品的分布省市数比总体资源减少了8个, 资源主要来源省市所占比例由原来的50%降到了35%。因此, 建议以15%~20%作为构建小规模胡萝卜资源核心样品的适宜比例。

关键词: 胡萝卜, 资源, 地方品种, 核心样品

Abstract: In order to establish a core collection of Chinese traditional carrot germplasm, a total of 340 accessions was evaluated for 4 quantitative and 9 qualitative traits and the data were submitted for cluster analyses. Under the suitable threshold value, the accessions thatwere closer to the value were selected as candidates to form core collection. Three samp ling p roportions of 10% , 15% and 20% were used to establish core collection. 13 traitswere compared between 3 core collections and entire collection in order to test the validity
of p rimary core collections. The results showed that the means of β - carotene content, drymatter content and vitamin C contentwere significant between the p rimary core collections and the entire collection, while the ratios of phenotype retained of 4 quantitative traitswere high. Variances of phenotype frequency of 9 qualitative traits were not significant between the primary core collections and the entire collection while the ratios of phenotype retained were 100%. With samp ling p roportion reduced, the number of regions that core collection distributed decreased. 8 regionswere reduced and germplasm proportion from the main regionswas reduced from 50% to 35% between 10% core collection and the entire. 15% - 20% could be regarded as the optimal proportion for establishing Chinese traditional carrot germplasm core collection.

Key words: Carrot, Germplasm, Landlord species, Core collection