关键词: 甘薯;元素;含量;品种;产地

Abstract:

Ten elements contents in 39 sweet potato samples (38 varieties) planted in Xuzhou and Nanchong were measured to provide scientific basis for breeding, promotion and utilization of sweet potato varieties. The results were statistically analyzed with SPSS13.0. The correlation coefficients of  these ten elements working curves were all greater than  0.999 0, the RSDs of measurements were all less than 8.0%, the recoveries were between 96.0%~119%. The order of ten elements contents from high to low is potassium, sodium, phosphorus, calcium, magnesium, iron, zinc, manganese, copper and selenium. The dry weight ratio and elements contents varied greatly for different varieties from the same production areas. No statistical difference was observed among ten elements contents of sweet potato with different flesh colors.

Key words: sweet potato, element, content, variety, production area