Formation of microsclerotia of Verticillium dahliae in petioles of infected ash trees |
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| Authors: | A. J. M. Rijkers J. A. Hiemstra G. J. Bollen |
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| Affiliation: | (1) Department of Phytopathology, Wageningen Agricultural University, P.O. Box 8025, 6700 EE Wageningen, the Netherlands;(2) Department of Forestry, Wageningen Agricultural University, P.O. Box 342, 6700 AH Wageningen, the Netherlands |
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| Abstract: | Under young ash trees infected withVerticillium dahliae, over 10% of the petioles of fallen leaves were colonized by the pathogen. Counts of microsclerotia in six petioles yielded an average number of 1500 per cm of petiole. Windblown leaves from infected trees very probably contribute to dissemination of the pathogen in forest stands and nurseries. |
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