Comparison and comprehensive evaluation of fruit quality of different blueberry (Vaccinium spp.) cultivars
In the present study, fruit quality of 22 blueberry cultivars introduced in Shandong province were analyzed and comprehensive evaluated. The results showed that the nine quality indicators are greatly different among different blueberry cultivars. Variation coefficients of fruit weight, fruit specific gravity, hardness, soluble solid content, valid acidity value (pH), anthocyanin content, vitamin C (VC) content were all greater than 10.00%, indicating high difference between cultivars. Meanwhile, variation coefficients of fruit shape index and peel brightness index (L*) were less than 10.00%, which were more stable indicators. Five quality indicators including fruit shape index, hardness, L*, soluble solids and pH were screened out, using correlation analysis and principal component analysis method, as the core indicators to comprehensive evaluate fruit quality of different blueberry cultivars. Analytic hierarchy process was applied to give weight to the core index, and mathematics model of comprehensive evaluation was established to calculate the comprehensive evaluation index of different blueberry cultivars, thereby evaluating the fresh and processing suitability of different blueberry cultivars. The classifications of 22 blueberry cultivars showed that the combination of principal component analysis and correlation analysis is a reliable method to analyze the blueberry fruit quality index, comprehensive evaluate the fresh and processing suitability of different blueberry cultivars.
Liu, Binghua, Wang, Kaifang, Zhao, Dengchao, Jia, Min, Wang, Xiaofang, Liang, Jing, Shu, Xiuge and Sun, Lei (2019). Comparison and comprehensive evaluation of fruit quality of different blueberry (Vaccinium spp.) cultivars. Acta Hortic. 1265, 1-10
blueberry, quality characteristics, core indicators, variation coefficients, principal component analysis