Physiological effects of humic acids on drought resistance of wheat

Abstract

Abstract: Under dry climate condition, spraying humic acids can decrease the loss of soil moisture and enhance the water retention ability of wheat leaf.The activities of superoxide dismutase (SOD) and catalase (CAT) in leaf cells are significantly increased, but the MDA content and leakage rate of electrolyte are significantly decreased, and hence, the chlorophyll decomposition is retarded, the photosynthetic rate and grain filling intensity are increased.the plant senescence is retarded, the drought resistance of wheat is enhanced and its thousand-grain weight is increased.

Key words: Humic acids, Drought resistance, Physiological effect, Wheat

Cheng Fujiu, Yang Daoqi, Wu Qingsheng . Physiological effects of humic acids on drought resistance of wheat[J]. Chinese Journal of Applied Ecology, 1995, 6(4): 363-367.

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Physiological effects of humic acids on drought resistance of wheat

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