Abstract:In order to compare the quality characteristics of the excellent third-generation large-fruit Russian seabuckthorn varieties, eight varieties of imported third-generation large seabuckthorn fruits from Russia as the research objects of this study, and the main cultivated large-fruit seabuckthorn variety ‘Shenqiuhong’ that is currently promoted widely in the “Three North” region as the control. The 20 quality indicators such as fruit quality, total phenolic content, and vitamin E content were measured, and the principal component analysis and regression analysis methods were used for a comprehensive evaluation. The results showed that the fruit mass of the eight third-generation Russian sea buckthorn varieties was 25.27~73.18 g, with their vitamin E contents ranging in 7.21~158.54 μg/g, their total phenolic contents ranging in 1.26~2.68 mg/g, their soluble sugar contents ranging in 18.46~29.86 mg/g, and their sweet-acid ratios ranging in 0.85~2.00. The principal component analysis extracted a total of 5 principal components, representing 93.767% of the information of the above indicators. Using stepwise regression analysis, the original 20 evaluation indicators were simplified into three indicators: vitamin E content, sweet-acid ratio, and total phenolic content. The comprehensive evaluation found that, except for 'Danbang', the comprehensive scores of the other seven Russian varieties all exceeded that of the control variety ‘Shenqiuhong’, and ‘Sudalusika’, ‘Yilishabai’, ‘Huangguan’, ‘Chengbang’ were scored higher. The research results provide a basis for evaluating the quality of large-fruit seabuckthorn berry planted in different regions and determining their main quality indicators. And four excellent varieties, ‘Shenqiuhong’, and ‘Sudalusika’, ‘Yilishabai’, ‘Huangguan’, ‘Chengbang’ were screened out, which can be promoted and utilized as key high-quality seabuckthorn resources.
