45个桑种质和品种资源叶的营养品质综合评价

Comprehensive Evaluation of Nutritional Quality of Leaves from 45 Mulberry Germplasms and Varieties

为适应桑树多元化开发对食用专用桑品种的需求,本研究采用因子分析法对45个不同桑树种质和品种资源叶的营养品质进行综合评价分析,以期筛选桑叶食用专用品种。结果表明,45个不同桑树种质和品种资源叶的13个营养成分差异明显,部分营养成分之间存在显著相关关系,为桑叶食用专用种质和品种筛选提供理论依据;影响桑叶营养品质的主要指标为有害微量元素因子、有益微量元素因子、重量因子、碳水化合物因子和营养品质辅助因子,这些公因子对桑叶营养品质综合评价的累计方差贡献率达89%;45个桑种质和品种资源叶的营养品质综合评价结果表明排名前3位的品种分别是嘉陵20号、红果1号和白玉王,其中嘉陵20号为高产叶用桑,该品种是这些资源中最佳桑叶食用专用品种的候选。

Mulberry leaves,rich in nutrients and functional ingredients,is used as both food and medicine in China.In order to meet the demand for specialized edible mulberry varieties in the diversified development of mulberry trees,factor analysis method was applied to comprehensively evaluate the nutritional quality of leaves from45mulberry germplasms and varieties for the purpose of screening specialized mulberry varieties for edible leaves in this study.Results showed that13nutrients in leaves from45mulberry germplasms and varieties were obviously different and some nutrients had a significant correlation with each other,providing a theoretical basis for screening specialized mulberry varieties for edible leaves.In addition,the main factors influencing the nutritional quality of mulberry leaves were found to be harmful trace element factors,beneficial trace element factors,weight factors,carbohydrate factors and nutritional quality cofactors.The cumulative variance contribution rate of the seven factors above was up to89%.Our results showed that Jialing No.20,Hongguo No.1and Baiyuwang were ranked as the top three respectively based on comprehensive evaluation of the nutritional quality of mulberry leaves.Among these Jialing No.20was the optimal candidate variety for a high yield of edible mulberry leaves.