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Acta Agron Sin ›› 2008, Vol. 34 ›› Issue (07): 1280-1284.

• RESEARCH NOTES • Previous Articles     Next Articles

Genetic Analysis and Molecular Mapping of Stripe Rust Resistance Gene in Wheat Cultivar Zhongliang 22

YANG Min-Na1,XU Zhi-Bin2,WANG Mei-Nan1,SONG Jian-Rong3,JING Jin-Xue1*,LI Zhen-Qi1   

  1. 1 College of Plant Protection / Key Laboratory of Molecular Biology for Agriculture of Shaanxi Province, Northwest A&F University, Yangling 712100, Shaanxi; 2 Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, Sichuan; 3 Institute of Agricultural Science of Tianshui, Tianshui 741001, Gansu, China
  • Received:2007-09-03 Revised:1900-01-01 Online:2008-07-12 Published:2008-07-12
  • Contact: JING Jin-Xue

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Abstract: To identify and tag new resistance genes to stripe rust (Puccinia striiform f. sp. tritici) in a wheat (Triticum aestivum L.) cultivar Zhongliang 22 (Zhong 5/S394//Xiannong 4), resistance identification with the F2 population of Zhongliang 22/Mingxian 169 at seedling stage, monosomic analysis by Chinese Spring, and SSR Markers were employed in the current experiment. Genetic analysis indicated that one dominant nucleic gene (temporarily designated as Yrzhong22) and one recessive cytoplasmic gene conditioned stripe rust rust resistance in Zhongliang 22, and Yrzhong22 was located on chromosome 5B. Using the resistant and susceptible pools derived from a cross of Zhongliang 22 ´ Mingxian 169, SSR markers combined with bulked segregation analy-sis (BSA) revealed that four SSR markers located on chromosome 5BL were linked to Yrzhong22. The genetic distances between Yrzhong22 and its nearest makers Xwmc810 and Xgdm116 were 2.7 cM and 4.4 cM, respectively. Yrzhong22 is probably a novel resistance gene to wheat stripe rust donated from Elytrigia intermedium on the basis of pedigree analysis and molecular results.

Key words: Zhongliang 22, Wheat stripe rust, Resistance gene, Genetic analysis, Monosomic analysis, Molecular mapping

CLC Number: 

  • 10.3724/SP.J.1006.2008.01280
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