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A Study on Mechanism in the Prnomotion of Drought Resistance by Spermidine

Shang Zhengqing; Wang Xiufen; Zhou Huixin(Dept.of Agronomy,Hebei Agric.Univ.,Baoding 071001)  
with the maize seedlings of Yiedan 4 as tested material,the offect of spermidine on the protective enzyme system,photosynthetic intensity and stomatal resistance under the condition of water stress was studied by conducting water stress of artificial modeling using polyethylene giycoi(PEG-6000)and spraying spermidine simultaneously. The results showed that the treatment with spermidine promoted the activities greatly of SOD、POD and photosynthetic intensity but reduced the stomatal resistance to some extent in maize seedlings.It was indicated that spermidine could promote the drought resistance of maize seedlings.
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