Variation of Active Oxygen Metabolism and Osmotic Regulators Contents in Camellia sinensis Leaves under Low-temperature Stress
In order to study the physiological and biochemical responses of tea trees to low - temperature stress, and reveal the physiological mechanism of stress adaptation and its relationship with the cold resistance of tea tree, the branches of two - year - old Camellia sinensis cv. Fudingdabai and Jiukengzhong were used as materials to determine the generation rate of superoxide anton (O-2 ) and the contents of H2O2, malondialde-hyde ( MDA), proline, soluble protein and soluble sugar in tea leaves under different treat time of cold stress. The results showed that with the prolonging of stress time, the generation rate of 0-2 increased to a certain degree and then decreased, and the contents of H2O2 and MDA increased significantly. But the variation of pro-line content was not regular. The absolute content of soluble protein and soluble sugar increased, which could slow down the increase of cell membrane permeability.
Camellia sinensisLow - temperature stressActive oxygenOsmotic regulators
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维普
