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QTL mapping for adult-plant leaf rust resistance genes in Chinese wheat cultivar Weimai 8

Author

Listed:
  • Jiazhen WANG

    (College of Plant Protection, Biological Control Center of Plant Diseases and Plant Pests of Hebei, Agricultural University of Hebei, Baoding, P.R. China)

  • Zaifeng LI

    (College of Plant Protection, Biological Control Center of Plant Diseases and Plant Pests of Hebei, Agricultural University of Hebei, Baoding, P.R. China)

  • Lingzhi SHI

    (College of Plant Protection, Biological Control Center of Plant Diseases and Plant Pests of Hebei, Agricultural University of Hebei, Baoding, P.R. China)

  • Lin ZHU

    (College of Plant Protection, Biological Control Center of Plant Diseases and Plant Pests of Hebei, Agricultural University of Hebei, Baoding, P.R. China)

  • Zhikuan REN

    (College of Plant Protection, Biological Control Center of Plant Diseases and Plant Pests of Hebei, Agricultural University of Hebei, Baoding, P.R. China)

  • Xing LI

    (College of Plant Protection, Biological Control Center of Plant Diseases and Plant Pests of Hebei, Agricultural University of Hebei, Baoding, P.R. China)

  • Daqun LIU

    (College of Plant Protection, Biological Control Center of Plant Diseases and Plant Pests of Hebei, Agricultural University of Hebei, Baoding, P.R. China)

  • Syed Jawad Ahmad SHAH

    (NIFA Tarnab, Peshawar, Pakistan)

Abstract

The wheat cultivar Weimai 8 is a good source of adult-plant resistance to leaf rust in China. In order to understand the genetic background of the resistance genes, 179 F2:3 families derived from the cross Weimai 8 and Zhengzhou 5389 (susceptible to leaf rust) were used to construct a linkage map. Results showed that there was a major QTL on chromosome 2AS, temporarily named QLr.hbau-2AS, responsible for the resistance. QLr.hbau-2AS from the resistant parent Weimai 8 was between the SSR markers Xcfd36 and Xbarc1138, with an interval length of 2.58 cM. In the 2010-2011, 2011-2012 and 2012-2013 crop seasons, it explained 25.79, 71.55 and 60.72% of the phenotypic variation, respectively. The location of QLr.hbau-2AS was close to the leaf rust resistance gene Lr37. However, they may not be the same since QLr.hbau-2AS has a different virulence test response from Lr37. This study identified two closely linked flanking molecular markers QLr.hbau-2AS and these molecular markers will help marker-assisted selection in breeding resistant cultivars in the future.

Suggested Citation

  • Jiazhen WANG & Zaifeng LI & Lingzhi SHI & Lin ZHU & Zhikuan REN & Xing LI & Daqun LIU & Syed Jawad Ahmad SHAH, 2015. "QTL mapping for adult-plant leaf rust resistance genes in Chinese wheat cultivar Weimai 8," Czech Journal of Genetics and Plant Breeding, Czech Academy of Agricultural Sciences, vol. 51(3), pages 79-85.
    • Handle: RePEc:caa:jnlcjg:v:51:y:2015:i:3:id:51-2015-cjgpb
    DOI: 10.17221/51/2015-CJGPB
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