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ACTA HORTICULTURAE SINICA ›› 2017, Vol. 44 ›› Issue (2): 215-222.doi: 10.16420/j.issn.0513-353x.2016-0519

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Screening of SNP and InDel Markers to Glomerella Leaf Spot Resistance Gene Locus in Apple Using HRM Technology

LIU Yuanxia1,LAN Jinhao2,BAI Suhua3,SUN Xiaohong3,LIU Chunxiao1,ZHANG Yugang1,and DAI Hongyi1,*   

  1. 1Qingdao Key Laboratory of Genetic Improvement and Breeding in Horticultural PlantsCollege of HorticultureQingdao Agricultural UniversityQingdaoShandong 266109China2College of Agronomy and Crop ProtectionQingdao Agricultural UniversityQingdaoShandong 266109China3College of Life SciencesQingdao Agricultural UniversityQingdao,Shandong 266109China
  • Online:2017-02-25 Published:2017-02-25

Abstract:

In present study,10 SNP and 10 InDel markers associated with Glomerella leaf spot(GLS) resistance in the region ofRgls,on apple linkage group(LG)15,in a region of 500 kb between S0304673 and S0405127 markers,obtained by using the whole genome sequencing technology were tested in the population of 207 F1 individuals derived from a cross between‘Golden Delicious’and‘Fuji’apples by High Resolution Melting(HRM). Two SNP and 4 InDel markers tightly linked to the Rgls locus were screened. Through analyzing the genotypes and phenotypes of the recombinant individuals,the Rglslocus was fine mapped within a distance of 100 kb between InDel4199 and SNP4299 markers on the‘Golden Delicious’genome sequence and was co-segregated with InDel4227 and InDel4254 markers. Forty genes were predicted within the region of 4.1–4.3 Mb flanked the Rglslocus,including cellular component,molecular function and biological process in a total of 19 GO classifications.

Key words: apple, HRM, Glomerella leaf spot, SNP marker, InDel marker, fine mapping

CLC Number: