Incidence of the A2 mating type ofPhytophthora infestans on potato crops in Northern Ireland |
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| Authors: | Louise R. Cooke Rhonda E. Swan T. S. Currie |
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| Affiliation: | (1) Applied Plant Science Research Division, Department of Agriculture for Northern Ireland, Newforge Lane, BT9 5PX Belfast, UK;(2) Department of Applied Plant Science, The Queen's University of Belfast, Belfast, UK |
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| Abstract: | Summary Of 250 isolates ofPhytophthora infestans obtained from Northern Ireland potato crops between 1981 and 1993, only six proved to be of the A2 mating type, the remainder being A1. The first A2 isolate was obtained from a tuber in 1987. The frequency of A2 isolates from 1987 onwards was 3%, a lower incidence than has been reported for England and Wales and the Republic of Ireland. There was no association between phenylamide resistance and mating type. |
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| Keywords: | potato late blight phenylamide resistance |
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