Radish (Raphanus sativus L.) is an important vegetable crop worldwide. High nutritional quality was critical in itsgenetic improvement and production. The nutritional quality of 42 Chinese radish cultivars was analyzed in this study.The contents of six nutritional facts, dry matter (DM), crude fiber (CF), total soluble sugar (TSS), vitamin C (VC), protein,and nitrate, ranged from 29.7 to 88.2, 4.507 to 18.546, 2.233 to 15.457, 0.1416 to 0.3341, 0.34 to 1.15, and 1.81 to 5.89 g kg-1 freshweight (FW), respectively. Significant differences among the 42 radish cultivars were detected in the contents of nutritionalfacts. The data were subjected to cross-correlation analysis and principal component analysis (PCA). It was found that DMcontent was positively correlated with the content of TSS (r = 0.7104), VC (r = 0.4011) and protein (r = 0.4120). Vitamin C (VC)content of radish showed a positive correlation (r = 0.3300) with the protein content. According to the principal componentanalysis, out of the 42 radish cultivars, Nau-17, Nau-28, Nau-6, Nau-11, Nau-10, Nau-27, and Nau-31 were detected with veryhigh scores in comprehensive evaluation. It could be concluded that abundant diversity of nutritional fact content occurredin different radish genotypes, and PCA analysis was effective for selecting radish germplasm with high quality. The resultscould contribute useful knowledge of nutritional quality, and provide important germplasms for the elite cultivar developmentand the inheritance study of nutritional facts in radish.
展开▼
