Fig. 1. Effect of lights on lesion formation in the leaves of rice cv. Koshihikari infected
with M. oryzae. Rice cv. Koshihikari at 3 or 4-leaf-stage was inoculated M. oryzae
(2 105 spores/ml) and kept in a moist chamber. After 24 h, inoculated plants were
incubated under the natural, white and red light conditions. Number of lesions per
each plant was investigated 7 days after light treatments. Each value is the average of
three separate experiments with three plants per experiment and the bar indicates the
standard deviation