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

Jiazhen Wang, Zaifeng Li, Lingzhi Shi, Lin Zhu, Zhikuan Ren, Xing Li, Daqun Liu and Syed Jawad Ahmad Shah
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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

Czech Journal of Genetics and Plant Breeding, 2015, vol. 51, issue 3, 79-85

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.

Keywords: gene postulation; molecular marker; QTL loci; wheat leaf rust (search for similar items in EconPapers)
Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlcjg:v:51:y:2015:i:3:id:51-2015-cjgpb

DOI: 10.17221/51/2015-CJGPB

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