不同淮山药品种(种质)资源营养特性与聚类分析  

Nutritional characteristics and cluster analysis in yam varieties(germplasm) resources

作　　者：韦本辉[1] 甘秀芹[1] 韦威旭[1] 宁秀呈[2] 何虎翼[1] 覃维治[1] 何龙飞[3] 

机构地区：[1]广西农业科学院经济作物研究所,南宁530007 [2]广西农业科学院种质库,南宁530007 [3]广西大学农学院,南宁530005

出　　处：《广西农业科学》2008年第5期596-600,共5页Guangxi Agricultural Sciences

基　　金：国家自然科学基金项目(30761026);广西创新能力建设项目(桂科能0443002-6);广西科技攻关项目(桂科攻0537007-4);广西农科院科技发展基金资助项目(2004006,2003065)

摘　　要：通过对不同淮山药品种(种质)的营养成分进行测定,并对结果进行相关与聚类分析,结果表明,蛋白质含量最高的是桂淮5号和GY 2,分别为3.03%和2.69%;淀粉和总氨基酸含量最高的是GY 2和GY 62,分别为29.76%、1.95%和27.9%、1.88%;总皂甙含量最高的是GY 2和GY 47,铁、锌、铜含量最高的是GY 2。因此,GY 2的综合营养品质较好。相关分析结果显示,不同营养品质成分之间具有相互促进关系:淀粉与总皂甙含量呈极显著正相关,脂肪与锌含量呈极显著正相关,可溶性总糖与锌、铁、铜含量均呈极显著正相关。通过聚类分析,可将不同淮山药品种(种质)分为总皂甙含量较高型、铁含量较高型、淀粉含量较高型、蛋白质氨基酸含量较高型等4大类,营养品质差异也可作为淮山药种质分类的依据之一。In this experiment, the nutritional components of different yam varieties （germplasm） were determined, the correlation and cluster analysis were done. The results showed that the protein content of Guihuai 5 and GY2 were the highest, which was 3.03% and 2.69%, respectively; the starch and total amino acid contents of GY2 and GY62 were the highest, which were 29.76%, 1.95% and 27.9%, 1.88%, respectively. Moreover, the saponin contents of GY2 and GY47 were the highest, and the iron, zinc, and copper contents of GY2 were the highest. Therefore, the comprehensive nutritional quality of GY2 was better. Correlation analysis showed that between starch and saponins, fat and zinc contents, total soluble sugar and Fe, Zn, Cu had a very significant positive correlation. It indicated that there were mutual promotion relationships between different nutritional components. By cluster analysis, different yam varieties （germplasm） resources were divided into four major categories, such as higher saponin type, high-iron type, higher starch type, higher protein and amino acid type. Therefore, the difference of nutritional quality could be used as one of category bases for yam germplasm.

关 键 词：淮山药 品种(种质)资源 营养特性 聚类分析 

分 类 号：S632.101[农业科学—蔬菜学]