Abstract
Survivorships of leaves and seasonal changes of maximum photosynthetic rates of Pleioblastus pubescens Nakai were compared among P. pubescens growing under different light intensity conditions, to determine the photosynthetic properties. Leaves of culms growing under light conditions showed higher photosynthetic rate in spring and summer and abrupt decreases in photosynthetic rates were observed from summer to winter. The longenity of leaves under light conditions was shorter than that under dark conditions. On the contrary, under dark conditions the longevity of leaves was prolonged and significant lower photosynthetic rates were observed in summer than under light conditions. Decreases of photosynthetic rates from to winter and next summer were not observed.
