An N-band marker for gene Lr18 for resistance to leaf rust in wheat

The leaf rust resistance gene, Lr18, of common wheat cultivars has been derived from Triticum timopheevi and is located on chromosome arm 5BL. Chromosome banding (N-banding) analyses revealed that in the wheat cultivars carrying Lr18 that were examined, which had been bred in 6 different countries,...

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Bibliographic Details
Published in:Theoretical and applied genetics 1994-11, Vol.89 (5), p.643-646
Main Author: Yamamori, M. (Tohoku National Agricultural Experiment Station, Morioka (Japan))
Format: Article
Language:English
Subjects:
BANDEO DE CROMOSOMAS
BANDING CHROMOSOMIQUE
GENE
GENES
Leaf rust resistance
Lr18
MARCADORES GENETICOS
MARQUEUR GENETIQUE
N-banding
Pflanzenzuechtung
PUCCINIA RECONDITA
RESISTANCE AUX MALADIES
RESISTENCIA A LA ENFERMEDAD
TRITICUM AESTIVUM
Wheat chromosome arm 5BL
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Summary:The leaf rust resistance gene, Lr18, of common wheat cultivars has been derived from Triticum timopheevi and is located on chromosome arm 5BL. Chromosome banding (N-banding) analyses revealed that in the wheat cultivars carrying Lr18 that were examined, which had been bred in 6 different countries, chromosome arm 5BL possessed a specific terminal band not carried by their susceptible parental cultivars. It was suggested that this terminal N-band was introduced from T. timopheevi together with Lr18. N-banding analysis of a T. timopheevi strain showed that one of two timopheevi chromosomes had provided Japanese wheat lines containing Lr18 with the terminal band.
ISSN:0040-5752
1432-2242
DOI:10.1007/BF00222461