Abstract:To analyze the differences in basic nutritional components and functional constituents of qamgur（Brassica rapa L.） from different production regions in Xinjiang and to clarify its quality characteristics，this paper determined fundamental indicators （e.g.，moisture，protein，crude fiber，mineral elements，amino acids）and functional indicators （e.g.，crude polysaccharides，total flavonoids，saponins）. Representative differential indicators were then selected for discriminant analysis to characterize the nutritional quality differences and quality characteristics of qamgur from different production regions. The results showed that qamgur from the Aksu production region had the highest values among all production regions for protein content （2.12 g/100 g），crude fiber content （1.11%），soluble solids content （12.51%），sucrose content （3.87 g/100 g），total sugar content （7.37 g/100 g），titratable acid content （0.19 g/100 g），vitamin C content （64.80 mg/100 g），total mineral element content （7 729.10 mg/kg），and total amino acid content （1 509.50 mg/100 g），with significant differences compared to the other three production regions （P＜0.05）. Analysis of quality characteristics based on mineral elements and amino acids indicated that sodium，iron，calcium，and phosphorus were the characteristic mineral elements for distinguishing qamgur from different production regions；cystine，glutamic acid，methionine，phenylalanine，and proline were the characteristic amino acids for distinguishing qamgur from different production regions.