Dipterocarpus obtusifolius exhibits enhanced photosynthetic capacity at high temperatures.

Abstract??Seedlings planted on degraded lands experience high leaf temperature in daytime because of the lack of vegetation shading. The effect of high temperature on the photosynthetic capacity was investigated inDipterocarpus obtusifoliusTeijsm.exMiq. andD. chartaceusSym. seedlings planted on degraded sandy soils in southern Thailand. Neither species showed decrease in photosynthetic capacity at leaf temperature over 38 ?C as compared to that at 28 ?C.D. obtusifoliusshowed higher photosynthetic capacity at high temperatures. Enhanced photosynthetic capacity at high temperatures would be a key for high photosynthetic performance ofD. obtusifoliusplanted on degraded sandy soils. [ABSTRACT FROM AUTHOR]