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Acta Horticulturae Sinica ›› 2023, Vol. 50 ›› Issue (5): 921-932.doi: 10.16420/j.issn.0513-353x.2022-0052

• Genetic & Breeding·Germplasm Resources·Molecular Biology •     Next Articles

Evaluation of Cold Tolerance of 90 Apple Cultivars and Genome Wide Association Analysis

KAN Zhiyong, ZHANG Dehui(), LI Zhongxing, YU Sisi, QIAN Qian, FAN Tianle, LI Xuewei, MA Fengwang, GUAN Qingmei()   

  1. State Key Laboratory of Crop Stress Biology for Arid Areas,College of Horticulture,Northwest A & F University,Yangling,Shannxi 712100,China
  • Received:2022-11-01 Revised:2023-02-21 Online:2023-05-25 Published:2023-05-31
  • Contact: ZHANG Dehui, GUAN Qingmei E-mail:tsu.zhangdehui@163.com;qguan@nwsuaf.edu.cn

Abstract:

In this study,ninety apple cultivars were used as experimental materials to evaluate cold tolerance by a relative electrical conductivity test. Genome-wide association analysis was conducted on 1 247 162 SNPs detected in apple accessions by genome resequencing technology,and candidate genes significantly associated with cold tolerance were selected. Three cultivars with the strongest cold tolerance were identified,and their relative electrical conductivity was all less than 40%,which were‘Jinhong’,‘Ederbostdorf’and‘Haralson’. Based on the association analysis using 1 247 162 high-quality SNPs and index of relative electrical conductivity characterizing cold tolerance,five significant correlated loci related to cold tolerance were identified,which were distributed on chromosome 4,15,and 16,respectively. Three candidate genes TIF3B1(MD04G1241100),COR47(MD15G1003900),and MD16G1069900 closely related to cold stress tolerance were identified.

Key words: apple, cold resistance, genome-wide association analysis

CLC Number: