不同淮山药种质(品种)的粘度比较与聚类分析  

Comparative analysis of different yam(Dioscorea opposita Thunb.) germplasm resources and their clustering on the basis of viscosity characteristics

作　　者：覃维治[1] 韦本辉[2] 甘秀芹[2] 韦民政[1] 唐秀桦[1] 熊军[1] 郑虚[1] 

机构地区：[1]广西农业科学院能源作物研究所,南宁530007 [2]广西农业科学院经济作物研究所,南宁530007

出　　处：《南方农业学报》2012年第2期176-179,共4页Journal of Southern Agriculture

基　　金：国家自然科学基金项目(30761026);南宁市科技发展基金项目(201102037B)

摘　　要：【目的】了解不同淮山药种质的粘度特性,为淮山药种质资源的育种和利用提供参考依据。【方法】对不同淮山药种质(品种)的粘度进行测定,并对结果进行聚类分析。【结果】15个淮山药品种(种质)的粘度变异系数为56.18%,多态性丰富;淮山药粘度最高的是GY44,达81.6dpa.s,其次为桂淮2号和GY17,粘度分别达74.3和71.7dpa.s。不同淮山药类型粘度高低为叶长心型>茎四棱型>野生型>叶三出浅裂型。通过聚类分析,可将15个淮山药品种(种质)分为高粘度型、中粘度型和低粘度型3大类。【结论】GY44、桂淮2号和GY17可作为加工型淮山药品种开发利用或育种的中间材料,而粘度差异可作为淮山药种质分类的依据之一。[Objective]The present experiment was conducted to investigate the viscosity characteristics of different yam（Dioscorea opposita Thunb.） germplasm resources to provide reference for its application in varietal breeding program.[Method]The viscosity of different yam germplasm was determined and data were utilized in performing cluster analysis.[Result]The coefficient of variation in viscosity of 15 yam germplasm（varieties） was 56.18%,which showed rich polymorphism.The highest viscosity was observed in variety GY44（81.6 dpa.s）,followed by Guihuai 2（74.3 dpa.s） and GY17（71.7 dpa.s）.Among different types of yam germplasm（varieties）,the viscosity in its decreasing order was：long-heart leaf type tetragonous stem typewild typethree-lobed leaf type.On the basis of cluster analysis,the fifteen yam varieties（germplasm） were classified into 3 types,viz.,high-viscosity type,middle-viscosity type and low viscosity type.[Conclusion]The yam variety GY44,Guihuai 2 and GY17 can be used as intermediate material in breeding programs.The differences in viscosity parameter could be used as criteria for classifying yam germplasm resources.

关 键 词：淮山药 粘度 比较 聚类分析 

分 类 号：S632.1[农业科学—蔬菜学]