Variety Evaluation and Nutritional Quality Analysis of Vegetable Sweet Potato
In this study,the phenotype traits of 25 vegetable sweet potato varieties were described,the eating and nutritional qualities were evaluated,and the yield was compared.The results showed that the com-prehensive performance of eating quality of Fucaishu 18,Wancaishu 5,Xiangcaishu 2,Ecaishu 2,Xiang-caishu 4,Ningcaishu 3,Chuancaishu 211,Ecaishu 3,Fucaishu 23 and Shulyu 1 was comparable to that of the control variety Fushu 7-6.The evaluation results based on membership function method showed that the top ten varieties in nutritional quality of leaves were Fucaishu 23,Fucaishu 18,Wancaishu 7,Xiangcaishu 4,Tainong 71,Wancaishu 5,Ecaishu 2,Xiangcaishu 3,Ningcaishu 4 and Ecaishu 10;the top ten varieties in nutritional quality of petioles were Ecaishu 2,Wancaishu 5,Tainong 71,Wancaishu 1,Guangcaishu 3,Fu-caishu 22,Ningcaishu 4,Xiangcaishu 4,Xiangcaishu 3 and Ningcaishu 1;the top ten varieties in nutrional quality of stems were Wancaishu 19,Xiangcaishu 4,Wancaishu 8,Ecaishu 10,Tainong 71,Ningcaishu 1,Fucaishu 22,Chuancaishu 211,Wancaishu 5 and Fucaishu 18.Among the tested varieties,the stem and leaf yield of Xiangcaishu 4 and Chuancaishu 211 were significantly lower than that of the control variety,and that of the other varieties were higher or comparable to the control.In production,the varieties of vegetable sweet potato could be developed and utilized according to nutritional quality and yield characteristics,and managed by integrated cultivation technologies.