Effects of waterlogging on growth and photosynthesis of 3 vegetable crops

The effects of waterlogging on growth and photosynthesis of tomato,eggplant and cucumber were studied by measurement of gas exchange parameters.The results showed that five-day waterlogging heavily influenced the photosynthesis and growth of the 3 crops,and the inhibiting effects of waterlogging on tomato and cucumber were especially obvious,but eggplant was tolerant to waterlogging.All the crops' stomatal conductance,transpiration rate and net photosynthetic rate presented similar variations at different waterlogging stages,and the non-stomatal factors were the major causes of their photosynthesis decreasing in waterlogging.Waterlogging resulted in decrease of their chlorophyll contents,and their carotenoid contents could be used as an important indicator of plant tolerance to waterlogging stress.