Abstract
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.
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Communicated by J. W. Snape
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Yamamori, M. An N-band marker for gene Lr18 for resistance to leaf rust in wheat. Theoret. Appl. Genetics 89, 643–646 (1994). https://doi.org/10.1007/BF00222461
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DOI: https://doi.org/10.1007/BF00222461