Original scientific paper
BIOLOGICAL CHARACTERISTICS OF SLOVAK ISOLATES OF ENTOMOPATHOGENIC FUNGUS PANDORA NEOAPHIDIS (REMAUDIÈRE ET HENNEBERT) HUMBER (ZYGOMYCETES, ENTOMOPHTHORALES)
Marek BARTA
orcid.org/0000-0003-2450-1769
; Department of Plant Protection, Slovak University of Agriculture, Tr. A. Hlinku 2, 949 07 Nitra, Slovakia
Ľudovít CAGÁŇ
; Department of Plant Protection, Slovak University of Agriculture, Tr. A. Hlinku 2, 949 07 Nitra, Slovakia
Abstract
Intraspecific variability of biological characteristics within entomopathogenic fungus Pandora neoaphidis was evaluated. Fifteen isolates of the fungus were obtained from 5 aphid species in Slovakia. Size of conidia, conidial germination, virulence, radial growth, and biomass production were evaluated. Conidial size varied considerably with exception of isolates originating from the same host population. Conidial germination was observed on all the surfaces tested and it was greatest at saturated humidity. Virulence, daily rate of radial growth and biomass production varied
depending on isolates. Isolates obtained from the same host colonies during fungal epizootics shoved also significant differences in the characteristics, what may suggest that epizootics in aphid populations are caused by associations of strains and not by prevalence of a single virulent strain.
Keywords
Pandora neoaphidis; Acyrthosiphon pisum; intraspecific variability; isolate variability
Hrčak ID:
52339
URI
Publication date:
19.2.2010.
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