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《农业科学学报：英文版》
>The Responses of Morphological Trait,Leaf Ultrastructure,Photosynthetic and Biochemical Performance of Tomato to Differential Light Availabilities
The Responses of Morphological Trait,Leaf Ultrastructure,Photosynthetic and Biochemical Performance of Tomato to Differential Light Availabilities
The whole-plant morphology, leaf ultrastructure, photosynthesis as well as enzyme activities of two tomato cultivars (Meifen-2 and Hongsheng) to differential light availabilities (450-500 μmol m-2 s-1, 75-100 μmol m-2 s-1) were examined in controlled environment. The results showed that the plant biomass and root/shoot ratio decreased and the specific leaf area increased significantly under the low light condition. There was a significant increase in malondialdehyde (MDA) concentration, superoxide dismutase (SOD) and peroxidase (POD) activities and decrease in soluble sugar and protein contents in LL-grown plants. For both cultivars, downregulation of photosynthesis and electron transport components were observed in LL-grown plants, the inhibition of the photosynthesis under the LL condition could be partially explained by the decrease of stomata density and by the changes of chloroplast.
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