Preliminary evaluation of the effect of Ampelomyces quisqualis on the degree of plant infestation with selected Erysiphales species proposed as potential bioindicators

https://doi.org/10.17221/10516-PPSCitation:Sucharzewska E., Dynowska M. (2002): Preliminary evaluation of the effect of Ampelomyces quisqualis on the degree of plant infestation with selected Erysiphales species proposed as potential bioindicators. Plant Protect. Sci., 38: 436-438.
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In the year 2000 Ampelomyces quisqualis was noted, with various intensity, in north-eastern Poland on different species of Erysiphales selected as potential bioindicators of urban pollution. The results of observation of Erysiphe sordida (on Plantago major), Sphaeroteca erigerontis-canadensis (on Taraxacum officinale) and Microsphaera hypophylla (on Quercus robur) – susceptible species, and Microsphaera palczewskii (on Caragana arborescens) – a resistant species, suggest that A. quisqualis shows affinity to some hosts regardless of their individual reactions to the level and range of anthropopressure. It clearly prefers the genera: Erysiphe and Sphaerotheca. Its effect on the degree of host plant infestation with powdery mildew under natural conditions seems insignificant.
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