then evenly sprayed
on the surface of maize leaves. After 6 h, the maize leaves were
inoculated by evenly spraying with the conidiospores of B. maydis.
The seedlings were first cultivated in the dark overnight at 24 C
and 98% relative humidity and then cultivated in a growth chamber
with 16-h-light and 8-h-darkness cycle at 24 C and 85% relative
humidity (Mu, 2000).