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Haustorial development test to characterize metalaxyl resistance and genetic variability in Plasmopara viticola 1
Author(s) -
HERZOG J.,
SCHÜEPP H.
Publication year - 1985
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.1365-2338.1985.tb00251.x
Subject(s) - plasmopara viticola , metalaxyl , haustorium , biology , zoospore , botany , downy mildew , fungicide , spore , host (biology) , genetics
A new method is described for assessing haustorium formation in Plasmopara viticola on metalaxyl‐treated grape leaves. Using this method, three types of sensitivity of P. viticola to metalaxyl could be distinguished and the precise ratio of sensitive, ‘reduced sensitive’ and resistant zoospores of selected isolates could be determined.