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Research on ‘Xanthomonas translucens’ of wheat and triticale at CIMMYT 1
Author(s) -
DUVEILLER E.
Publication year - 1989
Publication title -
eppo bulletin
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.327
H-Index - 36
eISSN - 1365-2338
pISSN - 0250-8052
DOI - 10.1111/j.1365-2338.1989.tb00134.x
Subject(s) - triticale , biology , agronomy , xanthomonas , streak , bacteria , microbiology and biotechnology , genetics , physics , optics
Bacterial streak caused by ‘ Xanthomonas translucens ’ is a serious bacterial disease of wheat and triticale and is distributed worldwide. Contaminated seed is the main source of inoculum. As disease incidence appears to be increasing in several countries, research is needed for more resistance in both crops. However, assessment of resistance is hampered by symptom variations and diagnosis can be difficult. Moreover, the nomenclature of the pathogens causing bacterial streak on cereals is rather confusing. A seed detection method has been developed at CIMMYT (Centro Internacional de Mejoramiento de Maiz y Trigo) using a WBC semi‐selective medium. The efficiency of hot cupric acetate has been confirmed to disinfect contaminated seed sets. More research is currently under way on epidemiology to identify the environmental factors favorable for disease expression and to determine the transmission rate of bacteria under Mexican conditions.