茎瘤芥核心种质资源营养品质分析及评价

为筛选优质茎瘤芥资源,以7份茎瘤芥核心种质为试材,对其可溶性蛋白、可溶性糖、维生素C、游离氨基酸、总酚、总黄酮、硝酸盐、亚硝酸盐和粗纤维等9种营养成分进行了测定和分析,并利用隶属函数法对其营养品质进行综合评价.结果表明,7份茎瘤芥核心种质之间亚硝酸盐含量无显著差异,而其余8个品质性状含量在不同茎瘤芥种质中均有一定差异....

Nutritional quality analysis and evaluation of tumorous stem mustard core germplasm resources

To screen high quality tumorous stem mustard(Brassica juncea var.tumida Tsen et Lee)resources,9 kinds of nutrients including soluble protein,soluble sugar,vitamin C,free amino acid,total phenolic,total flavonoid,nitrate,nitrite and crude fiber were determined and analyzed in seven core tumorous stem mustard germplasms,and then the comprehensive evaluation of their nutritional quality was performed by membership function analysis method.Results showed that the nitrite content was not significant different in seven core tumorous stem mustard germplasms,while the contents of all the other eight quality traits exhibited certain differences in the tumorous stem mustard germplasms.Among them,the variation coef fi cients of nitrate,soluble sugar and total phenols contents were the most maximal three,with values 24.13%,22.57%and 22.54%,respectively,while that of crude fiber and nitrite contents were the most minimal two,just 4.35%and 8.84%.According to membership function analysis,the best two germplasms of high comprehensive nutritional quality were SJYS and PFB12-18-23-10,both with the mean membership function value being greater than 0.7,which could be used as the parent materials for hybrid breeding new high quality and yield tumorous stem mustard varieties.