Abstract:

According by the reaction of tomato plant to high temperature, experiments with different high temperature at 30-36℃ by used artificial climate chamber were carried in 2010 to study the effect of high temperature on the photosynthesis charter of tomato leaves during fruiting period. The results showed that in 30-36℃ high temperature stress, with the increase temperature, the light compensation point of tomato was increased while the light energy initial utilize effectiveness, light saturation point, maximum photosynthesis rate and transpiration rate were decreased. Correlation analysis showed that photosynthesis rate was positive correlation to photosynthetic active radiation, stomata conduction, transpiration rate and relative humidity, while was negative relative to air temperature. It was that continuous high-temperature at 30-36℃ range more than 24h will seriously affect the tomato photosynthesis physiological activities.