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Acta Prataculturae Sinica ›› 2011, Vol. 20 ›› Issue (4): 305-310.

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Establishment of a gametocidal chromosome 2C specific SCAR marker

XU Guo-hui1, GUO Chang-hong1, YU Hong-tao1, CHEN Jing1, CONG Wen-wen1, ENDO T R2   

  1. 1.Key Laboratory of Molecular and Cytogenetics, Heilongjiang Province, Department of Biology, Harbin Normal University, Harbin 150025, China;
    2.Laboratory of Plant Genetics, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
  • Received:2010-05-10 Online:2011-04-25 Published:2011-08-20

Abstract: A total of 40 decamer oligonucleotides were used as primers to perform random amplified polymorphic DNA (RAPD) analysis on common wheat CS (Chinese spring), CS-2C disomic addition line, Aegilops cylindrica. Of these primers, one could amplify a specific DNA fragment in CS-2C disomic addition line and A. cylindrica. The fragment OPF031496 was cloned and sequenced; Sequence data searching in GenBank showed that this fragment was 92% homologous to a cloned cDNA sequence from Barley. Based on the sequence of OPF031496, a pair of SCAR (sequence characterized amplified region) primer 2C-F586, 2C-R586 was designed. SCAR analyses were performed on CS, CS-2C disomic addition line, A. cylindrica, and Thinopyrum elongatum (2X) CS-7E disomic addition line. The amplification results of SCAR primer showed that the SCAR586 marker appeared in the CS-2C disomic addition line and A. cylindrica but not in CS, T. elongatum (2X) CS-7E disomic addition line. Furthermore, SCAR analyses were also performed on F1 and F2 progenies between CS-2C and CS-7E disomic addition lines. PCR amplification results showed that the SCAR586 marker was in all of the F1 progenies between CS-2C and CS-7E and in some of the F2 progenies. The SCAR586 marker can be used for detecting the gametocidal chromosome 2C in common wheat backgrounds.

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