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Acta Prataculturae Sinica ›› 2009, Vol. 18 ›› Issue (2): 66-75.

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Identification of SRAP molecular markers linked to salt tolerance in Zoysia grasses

CHEN Xuan1, GUO Hai-lin1, XUE Dan-dan2, ZHENG Yi-qi2, LIU Jian-xiu1   

  1. 1.Institute of Botany, Jiangsu Province and Chinese Academy of Science, Nanjing 210014, China;

    2.College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
  • Received:2008-06-03 Online:2009-04-20 Published:2009-04-20

Abstract: In this paper, bulked segregant analysis was used to identify SRAP molecular markers linked to salt tolerance in Zoysia grasses using two salt-tolerant, extreme types of DNA pools. From 400 pairs of SRAP primer combinations, 111 were found with polymorphic bands. These were further screened using two extreme salt-tolerant samples of Zoysia japonica and 22 pairs of polymorphism primer combinations were selected. Finally, the primer combinations with specific bands were verified using salt-tolerant individuals and 7 SRAP molecular markers closely linked to salt tolerance were obtained. Based on the size of the amplified bands they were named: Me9-Em4260, Me9-Em18720, Me13-Em18500, Me5-Em20180, Me14-Em7220, Me6-Em17550, Me2-Em18260. This research will accelerate zoysia grass marker-assisted selection breeding and lay the foundation for salt-tolerant gene cloning.

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