木瓜属品种资源的数量分类研究  

Studies on Numerical Classification of Chaenomeles Cultivars

作　　者：王明明[1] 王建华[1] 宋振巧[1] 李圣波 曲燕[1] 刘静[1] 

机构地区：[1]山东农业大学农学院,山东泰安271018 [2]山东亚特生态技术有限公司,山东临沂266071

出　　处：《园艺学报》2009年第5期701-710,共10页Acta Horticulturae Sinica

基　　金：国家发改委中药材扶持项目[国发018(2006)]

摘　　要：在木瓜属(Chaenomeles)品种资源调查的基础上,选用41个形态学性状对29个栽培品种和2个野生种进行了数量分类学的聚类分析。结果表明:木瓜属品种资源可按品种的来源划分为毛叶木瓜种系(Ⅰ)、西藏木瓜(Ⅱ)、皱皮木瓜种系(Ⅲ)和日本木瓜种系(Ⅳ)4个表征群。日本木瓜种系较为独立,与毛叶木瓜种系的亲缘关系最远;西藏木瓜与毛叶木瓜的亲缘关系密切;皱皮木瓜种系位于日本木瓜种系和毛叶木瓜种系之间,与C.×superba和C.×vilmoriniana聚在一起。主成分分析表明,41个性状综合为6个主成分,其累积贡献率达72.396%。综合聚类分析和主成分分析的结果结合实际应用,作者认为木瓜属栽培品种的分类体系首先应以种系(品种来源)为第一级标准,花的大小可作为品种分类的二级标准,花色作第三级分类标准。Based on the survey of Chaenorneles cultivars resources, the numerical taxonomic method was used for the cluster analysis of 29 cultivars and 2 wild species with 41 morphological characters. The result revealed that 31 OTUs （ Operational Taxonomic Units） could be divided into 4 phenetic groups according to their botanical sources, namely C. cathayensis system （ Ⅰ ）, C. thibetica （ Ⅱ ）, C. speciosa system （Ⅲ） and C. japonica system （ Ⅳ ）. C. japonica system and C. cathayensis system are the most distantly related systems; C. thibetica appeared to be rather closely related to C, cathayensls; C. speciosa system together with the hybrid taxon C. superba and C. vilmoriniana takes an intermediate position between C.japonica system and C. cathayensis system. Principal component analysis showed that the 41 characters can be consolidated for the 6 principal components and their accumulative contribution ratio amounted to 72. 396%. Integrated cluster analysis and principal component analysis with practical applications, the author suggested that the classification of Chaenomeles cultivars should be firstly based on the systematics of wild species （ cuhivar sources）. Then, the flower size could be as the second criterion for the classification of Chaenomeles cultivars, and the flower color as the third criterion.

关 键 词：木瓜属 品种 数量分类 主成分分析 

分 类 号：S661.6[农业科学—果树学]