南瓜中含有的营养成分对多种疾病的防治有着不可忽视的作用。其中南瓜中的果胶、环丙基氨基酸以及微量元素锌、铬(Cr)对防治糖尿病起主要作用。但长期以来,由于人们对南瓜的营养价值认识不够,除部分食用外,还有一部分作为饲料处理,导致南瓜品种资源不能充分利用。本文采用干法消解处理样品,原子吸收光谱仪测定200份不同品种资源南瓜中铬的含量。其中203号样品总铬含量最低(0.015 3 mgkg),233号样品总铬含量最高(0.520 0mgkg),且已超出国家限量标准(≤0.5 mgkg)。通过对试验数据进行聚类分析,从200份不同南瓜品种资源中筛选出一批含铬量适宜的品种,为开展富铬南瓜新品种的选育奠定技术和种质基础,对利用南瓜防治糖尿病也有重要意义。 Pumpkin contains nutrients for the prevention and treatment of a variety of diseases can not be ignored. The pumpkin pectin, cyclopropyl amino acids and trace elements zinc, chromium (Cr) play a major role in the prevention and treatment of diabetes. But for a long time, because people do not know enough about the nutritional value of pumpkin, some of them are used as feedstuffs, which can not make full use of pumpkin variety resources. In this paper, dry digestion treatment samples, atomic absorption spectrometry Determination of 200 different varieties of pumpkin in the content of chromium. Among them, sample 203 has the lowest total chromium content (0.015 3 mgkg) and sample 233 has the highest total chromium content (0.520 0 mgkg), exceeding the national limit (≤0.5 mgkg). Based on the cluster analysis of the experimental data, a number of varieties with suitable chromium content were screened from 200 different varieties of pumpkin cultivars to lay the technical and germplasm foundation for the breeding of new chromium-rich pumpkin varieties. The prevention and treatment of diabetes mellitus Also important.