Weiqun Li^1,5* , Jirong Zhao^2* , Shuang Wang¹ , Wenquan Yu³ , Lin Li¹ , Haidong Bu³ , Kun Wang⁴ , Chang Liu³

1 Heilongjiang Academy of Agricultural Sciences Institute of Soil Fertility and Environmental Resources, Heilongjiang Key Laboratory of Soil Environment and Plant Nutrition, Harbin, 150086, China
2 College of Life Science Yan'an University; Shanxi Key Laboratory of Chinese Jujube, Yan'an, 716000, China
3 Mudanjiang Branch of Heilongjiang Academy of Agricultural Sciences, Heilongjiang Provincial Key Laboratory of Fruit Trees, Mudanjiang, 157000, China
4 Research Institute of Pomology OF CAAS, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Germplasm Resources Utilization) Ministry of Agriculture, Xingcheng, 125100, China
5 Agricultural Research Institute of the 10th Division of Xinjiang Production and Construction Corps, Beitun, 836000, China
* These authors contributed equally to this work
Author    Correspondence author
International Journal of Horticulture, 2021, Vol. 11, No. 4   doi: 10.5376/ijh.2021.11.0004
Received: 24 Sep., 2021    Accepted: 30 Sep., 2021    Published: 15 Oct., 2021

This article was first published in Molecular Plant Breeding in Chinese, and here was authorized to translate and publish the paper in English under the terms of Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Li W.Q., Zhao J.R., Wang S., Yu W.Q., Li L., Bu H.D., Wang K., and Liu C. 2021, Polyphenolic components and composition differences of fruit polyphenols in apple landraces grown in cold regions, International Journal of Horticulture, 11(4): 1-10 (doi: 10.5376/ijh.2021.11.0004)

The composition and content of polyphenols in fruit pericarp and pulp of 12 Apple landraces grown of Heilongjiang Province were determined by ultra-high performance liquid chromatography (UPLC), and the differences in the composition and content characteristics of polyphenols in different varieties were studied, and the main factor analysis and cluster analysis were carried out. The results showed that 5 kinds of 20 kinds of polyphenols were detected in 12 Apple landraces, the main phenolic substances in pericarp were epicatechin and catechin, and the main phenolic substances in pulp were chlorogenic acid, catechin and procyanidin. There were significant differences in the composition and content of polyphenols among different varieties, the smallest coefficient of variation was quercetin 3-glucoside (37.48%), and the largest coefficient of variation was rutin (267.18%). It was found that the content of proanthocyanidins in pericarp and pulp was higher by principal component analysis. Based on the content of polyphenol components, it was found that the results of pulp clustering were more consistent with the field phenotypic identification results and kinship. The results provide data support and theoretical basis for processing and utilization of phenolic substances and breeding of local varieties in Heilongjiang province.

Heilongjian; Apples; Fruits; Polyphenols; Principal component analysis