南方农业学报2012，Vol.43Issue(2)：176-179,4.DOI:10.3969/j:issn.2095-1191.2012.02.176
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
摘要
Abstract
[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 type >wild type >three -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Key words
yam (Dioscorea opposita Thunb.)/ viscosity/ comparison analysis/ cluster analysis分类
农业科技引用本文复制引用
覃维治,韦本辉,甘秀芹,韦民政,唐秀桦,熊军,郑虚..不同淮山药种质(品种)的粘度比较与聚类分析[J].南方农业学报,2012,43(2):176-179,4.基金项目
国家自然科学基金项目(30761026) （30761026）
南宁市科技发展基金项目(201102037B) （201102037B）
