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  • 刘同金,张晓辉,沈 镝,王海平,邱 杨,宋江萍,李锡香.欧洲山芥种质资源的表型遗传多样性分析[J].植物遗传资源学报,2015,16(3):528-534.    [点击复制]
  • Liu Tongjin.Analysis on Genetic Diversity of Barbarea Vulgaris Germplasm Resources Based on Phenotypic Traits[J].植物遗传资源学报,2015,16(3):528-534.   [点击复制]
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欧洲山芥种质资源的表型遗传多样性分析
刘同金,张晓辉,沈镝,王海平,邱杨,宋江萍,李锡香
0
(中国农业科学院蔬菜花卉研究所)
摘要:
欧洲山芥是研究抗虫皂苷生物合成及植食昆虫与植物协同进化机制的理想模式植物,是极具开发潜力的十字花科植物。为加强欧洲山芥种质资源的研究利用,对保存于国家蔬菜种质资源中期库中的引自欧洲的33份欧洲山芥种质和1份杂交材料进行了物候期观测、主要形态学性状测定和小菜蛾抗性鉴定结果表明:多数材料的表型性状的差异较大,材料间现蕾期最早(BV13-BAR13)和最晚(BV13-BAR9)的两份材料相差达47 d;从始花期到末花期的天数分布在17~46 d之间,总体上花期较短;分蘖能力强、叶表光滑、叶片数目多的种质居多;还发现4份角果抱茎的种质;极差和变异系数最大的性状是株高、角果长和花序长。34份材料中仅9份感小菜蛾,其他均具有很高的田间抗性。基于所有表型性状的聚类分析将34份欧洲山芥分为3个类群,抗虫和感虫材料分属不同的类群,基本反映出了各类群的亲缘关系。本研究结果将为欧洲山芥的遗传改良以及欧洲山芥种质资源在十字花科作物生产和育种上的应用提供基本依据。
关键词:  欧洲山芥  种质资源  表型性状  小菜蛾  遗传多样性
DOI:
投稿时间:2014-10-15修订日期:2015-01-26
基金项目:“十二五”农村领域国家科技计划课题(2013BAD01B04-2);“948”项目(2011-G1(4)-2)
Analysis on Genetic Diversity of Barbarea Vulgaris Germplasm Resources Based on Phenotypic Traits
Liu Tongjin
()
Abstract:
Barbarea vulgaris is an excellent cruciferous plant, particularly being ideal as a model species to study saponin biosynthesis, insect resistance, and coevolution of plants and insect pest. In order to make full use of B. vulgaris germplasm, the genetic diversity was analyzed among the 34 accessions conserved in the national mid-term gene bank for vegetables, based on the phenologic, morphological and insect resistance data from the field investigation. The results showed significant morphological diversity in B. vulgaris germplasm from Europe. Among the 34 accession, BV13-BAR13 bolted earliest, 47 days earlier than the latest bolting material (BV13-BAR9). Most of the B. vulgaris germplasm have glabrous leaves, strong tillering ability and more leaf numbers. The range and coefficient variation (CV) of the plant height, silique length and inflorescence length are the highest among all traits. Only 9 of 34 B. vulgaris are susceptible to the diamondback moth, most accessions are highly resistant to the pest. The clustering analysis showed that 34 accessions can be divided into 3 groups. The resistant and susceptible germplasm were distributed to different groups, reflecting their genetic relationships. Our research will provide useful materials and information for the genetic breeding of insect resistant B. Vulgaris and cruciferae crops.
Key words:  Barbarea vulgaris  Germplasm  Phenotypic characteristics  Diamondback moth  Genetic diversity

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