The antifungal activity of chitosan at different concentrations
on spore germination and germ tube elongation of B. cinerea and
P. expansum is shown in Fig. 1. Spore germination of P. expansumwas
significantly inhibited by chitosan at all concentrations,
while that of B. cinerea was significantly inhibited only when
the concentration of chitosan was higher than 0.01% (P < 0.05).
Chitosan completely inhibited spore germination of P. expansum
at 0.5% and B. cinerea at 1%. Germ tube elongation of
both pathogens was significantly inhibited when the chitosan
concentration was higher than 0.01% (P < 0.05).