Summary
A leaf rust resistant wheat-rye translocation stock, ST-1, introduced from Japan, comprised distinct morphological types. One type possessed a T1BL·1RS chromosome with genes Lr26, Yr9 and Sr31. A second type carried a new gene, Lr45, located in a large segment of rye chromosome translocated to wheat chromosome 2A. Its structure was identified as T2AS-2RS·2RL. Despite the homoeology of the 2A and 2R chromosomes and the high level of compensation provided by the translocation, Lr45 was not normally inherited and is probably associated with agronomic deficiencies that will prevent its exploitation in agriculture.
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Contribution No. 94-509-J from the Kansas Agricultural Experiment Station, Kansas State University, Manhattan, USA.
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McIntosh, R.A., Friebe, B., Jiang, J. et al. Cytogenetical studies in wheat XVI. Chromosome location of a new gene for resistance to leaf rust in a Japanese wheat-rye translocation line. Euphytica 82, 141–147 (1995). https://doi.org/10.1007/BF00027060
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DOI: https://doi.org/10.1007/BF00027060