Log concentration of Xcn1 was
used as abscissa and mycelial growth inhibition was used as
ordinate; linear regression equation was obtained for each
tested pathogenic fungal species (Table
2
).
According to linear
regression, EC
50
values were calculated, with results rang-
ing from 0.25 to 4.17
l
g/L, displaying high antifungal
activity against five species of
Phytophthora
. However,
because
P. infestans
is a very important pathogen of tomato,
and potato late blight diseases causes serious economic
losses in China, it was selected for further research
Log concentration of Xcn1 wasused as abscissa and mycelial growth inhibition was used asordinate; linear regression equation was obtained for eachtested pathogenic fungal species (Table2). According to linearregression, EC50values were calculated, with results rang-ing from 0.25 to 4.17lg/L, displaying high antifungalactivity against five species ofPhytophthora. However,becauseP. infestansis a very important pathogen of tomato,and potato late blight diseases causes serious economiclosses in China, it was selected for further research
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