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Journal of Applied Genetics 42(2), 2001, pp. 117-126

Molecular markers for leaf rust resistance genes in wheat

Jerzy CHELKOWSKI, Lukasz STEPIEN


Abstract: Over 100 genes of resistance to rust fungi: Puccinia recondita f. sp. tritici, (47 Lr – leaf rust genes), P. striiformis (18 Yr – yellow rust genes) and P. graminis f. sp. tritici (41 Sr – stripe rust genes) have been identified in wheat (Triticum aestivum L.) and its wild relatives according to recent papers. Sixteen Lr resistance genes have been mapped using restriction fragments length polymorphism (RFLP) markers on wheat chromosomes. More than ten Lr genes can be identified in breeding materials by sequence tagged site (STS) specific markers. Gene Lrk 10, closely linked to gene Lr 10, has been cloned and its function recognized. Available markers are presented in this review. The STS, cleaved amplified polymorphic sequence (CAPS) and sequence characterized amplified regions (SCAR) markers found in the literature should be verified using Triticum spp. with different genetic background. Simple sequence repeats (SSR) markers for Lr resistance genes are now also available.

Key words: brown rust, yellow rust, stem rust, RAPD, RFLP, STS, SCAR, resistance genes, wheat.

Correspondence: J. Chelkowski, Institute of Plant Genetics, Polish Academy of Sciences, ul. Strzeszynska 34, 60-479 Poznan, Poland, e-mail: jche@igr.poznan.pl

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