RELATION BETWEEN MORPHOLOGICAL AND BIOCHE MICAL PECULIARITIES AND THEVIRULENCE TO LARVAE OF ORCHARD WHITEFLY IN WILD ISOLATED OF VERTICILLIUM-LECANII (ZIMM) VIEGAS
Gv. Mitina et al., RELATION BETWEEN MORPHOLOGICAL AND BIOCHE MICAL PECULIARITIES AND THEVIRULENCE TO LARVAE OF ORCHARD WHITEFLY IN WILD ISOLATED OF VERTICILLIUM-LECANII (ZIMM) VIEGAS, Mikologia i fitopatologia, 31(1), 1997, pp. 57-64
10 signs, including toxin production, of 20 natural isolates of V. lec
anii were studied. The correlation and regression analysis of mutual i
nfluence of these signs were provided. The mathematic model of virulen
ce prognosis for V. lecanii against glasshouse whitefly was obtained.
The most significant signs were biomass and blastospores production, m
aintenance of toxins in biomass and in supernatant and rugosity of col
onies.