Scientia Agricultura Sinica ›› 2007, Vol. 40 ›› Issue (9): 1925-1935 .

• PLANT PROTECTION • Previous Articles     Next Articles

Postulation of Leaf Rust Resistance Genes in 47 New Wheat Cultivars(Lines)in China

  

  1. 中国农业科学院植物保护研究所植物病虫害生物学国家重点实验室
  • Received:2006-07-19 Revised:1900-01-01 Online:2007-09-10 Published:2007-09-10

Abstract: 【Objective】The objectives of this study were to postulate leaf rust resistance genes in 47 new wheat cultivars(lines)in China, and to analyse problems of postulations and their application and realization.【Method】With seventeen differential pathotypes being tested under different temperature and (or) light intensity, genes were detected with pedigree analysis. Postulation results were intensively analyzed.【Result】Ten named genes, Lr1(in 11 cultivars or lines), Lr3(8), Lr3bg(2), Lr9(3), Lr10(4), Lr13(10), Lr16(6), Lr23(2), Lr26(14), and Lr34(1), were identified. Unnamed genes were found in forty-two cultivars(lines).【Conclusion】Reliable results could only be obtained from more differential pathotypes, repeated determination under relatively steady and uniform environment, and pedigree analysis.

Key words: Wheat, Leaf rust, Resistance gene, Gene postulation, Adult plant resistance

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