| Abstract:To provide a scientific theoretical basis for the breeding,popularization and application of Vitis amurensis Rupr. around the ecological region of Tarim Basin,eight comprehensive systems for the evaluation of Xinjiang Vitis amurensis Rupr was established, the grape varieties with good field performance,which inculded Vitis amurensis Rupr. ‘Beibinghong’‘Shuanghong’‘Zuoyouhong’‘Xuelanhong’‘Shuangfeng’‘Beiguohong’‘Zuoshan1’ and ‘Zuoshan 2’， were used as test materials from 2019-2021 to measure 23 appearance and physical and chemical quality indicators of the fruit,and then its fruit was ranked according to the comprehensive score by descriptive statistics and PCA. The results showed that the 23 fruit quality indicators had different degrees of variation,of which the resveratrol,fruit shape index,Zn content and anthocyanin had significnat degree of variation,being more than,50%; cob mass,proanthocyanidins,solid acid ratio,and Fe content showed average variation,ranging from 30% to 50%; there were slight differences in other fruit quality indicators,being <30%. Six common factors with characteristic root >1 were extracted by factor analysis and their cumulative variance contribution rate reached 97.839% and a common factor PC1 contribution rate reached 22.154%,which were mainly determined by pH,fruit longitudinal diameter,transverse diameter,fruit mass per fruit,fruit volume per fruit and cob mass,and could mainly reflect the information of the fruit appearance quality. The common factor PC2 contribution rate reached 20.987%,which was determined by five factors,namely,soluble solids,total sugar,sugar-acid ratio,solid-acid ratio,and Mn content,and could mainly reflect the information of the sugar content of fruit juice; the common factor PC3 contribution rate reached 19.820%,which was determined by three factors,namely,Ca,Mg and Cu content,and could mainly reflect the content of mineral elements. The common factor PC4 contribution rate reached 19.117%,which was determined by three factors,namely,anthocyanin,total acid,and fruit shape index,and could mainly reflect juice color,acidity,and fruit shape; the common factor PC5 contribution rate reached 8.293%,which was determined by two factors,proanthocyanidins,and total flavonoids,could mainly reflect the nutritional status of the fruit. The common factor PC6 contribution rate reached 7.467%,which was determined by two factors,namely resveratrol and Zn content,which could mainly reflect the level of resveratrol and Zn content. The comprehensive score of Vitis amurensis Rupr. fruit quality was in descending order as ‘Beibinghong’‘Zuoyouhong’‘Xuelanhong’‘Zuoshan2 ’ ‘Beiguohong’ ‘Shuangfeng’ ‘Shuanghong’‘Zuoshan 1 ’. |
