by chitosan (P < 0.05). MI of both pathogen spores declined
with the increase of incubation time in PDB containing 0.5%
chitosan. However, MI stayed at a high level (more than 95%) in
control spores incubated in PDB without chitosan. The plasma
membrane of P. expansum was more sensitive to chitosan as
compared to that of B. cinerea. MI of P. expansum was 48.2%