Avoidance of leaf rust fungi in wild relatives of cultivated cereals |
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Authors: | D Rubiales M C Ramírez R E Niks |
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Institution: | (1) Department of Agronomy and Plant Breeding, Institute for Sustainable Agriculture, CSIC, Apdo 4084, 14080 Córdoba, Spain;(2) Department of Plant Breeding, Wageningen Agricultural University, P.O. Box 386, 6700 AJ Wageningen, The Netherlands |
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Abstract: | Summary Avoidance of rust fungi that was based on poor appressorium induction was previously found in Hordeum chilense. In the present study 95 accessions of Triticeae were screened for avoidance of Puccinia hordei. The percentage of appressorium formation per germinated spore ranged from 6 to 90%. On none of the 41 accessions of Aegilops, Agropyron, Elymus, Secale, Thinopyrum or Triticum studied was the rate of appressorium formation lower than 25%. Lower rates of appressorium formation were, however, found on accessions of wild barley species Hordeum brachyantherum, H. marinum, H. parodii and H. secalinum. Its implications in cereal breeding are discussed. |
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Keywords: | Appressorium avoidance leaf rust Aegilops Agropyron Elymus Hordeum Secale Thinopyrum Triticum Puccinia hordei |
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