Abstract

Based on the sampling on permanent sample plots in different seasons, quantities of epiphytic fungi, seasonal changes of fungal species, fungal community composition, and the relationship of  epiphytic fungi and microenvironment of Bambusa pervariabilis ×Dendrocalamopisis grandis were studied by plate dilution, morphological and molecular biological methods. The above four aspects were also comparatively analyzed between healthy leaves and diseased leaves. The results show that quantities of epiphytic fungi in diseased leaves was more than those of healthy leaves; fungal species was at most in summer and autumn and the isolation rate of Fusarium avenaceum and Microdochiumsp. 3 was higher than the others. Diversity index of fungi in different kinds of leaves indicated they had different richness and evenness degrees. Physiological index showed that the correlation was significant between epiphytic fungi quantities on diseased leaves and content of soluble protein, and had a significant positive correlation between fungal quantities in healthy leaves and content of soluble sugar.

Key words: Bambusa pervariabilis × Dendrocalamopisis grandis, diversity index, fungi, physiological index.