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Effects of the Seed Film Coating Salicylic Acid on the Chilling Tolerance of Cotton Seedlings
Authors:Li Fangzhou  Xin Huihui  Zhou Guangwei  Li Zhe  Hou Zhen'an  Ye Jun
Institution:The Key Laboratory of Oasis Eco-agriculture of Xinjiang Production Construction Group / College of Agriculture, Shihezi University, Shihezi, Xinjiang 832003, China
Abstract:The objective of this study was to investigate the effect of the different concentrations of the seed film coating salicylic acid on the cold tolerance of cotton seedlings using the sand culture method. The physiological response of cell membrane permeability, protective enzyme activity and osmotic adjustment of cotton seedling were measured before and after at low temperature stress and at normal temperature. The results showed that 1-10 mmol·L-1 of seed film coating with salicylic acid seed coating treatment could effectively alleviate damage to cotton seedlings at low temperature, and the accumulation of the relative electrical conductivity and malondialdehyde were reduced on cotton seedlings. The activity of superoxide dismutase, peroxidase, catalase, and soluble protein, soluble sugar and proline contents increased sharply. These results indicate that film coating with salicylic acid can alleviate the effects of low temperature stress on seedling growth inhibition and improve the cotton seedlings by providing chilling tolerance, and the optimum treatment concentration salicylic acid is 5 mmol·L-1.
Keywords:salicylic acid  seed film coating  cotton (Gossypium hirsutum L  ) seedlings  low temperature stress  chilling tolerance  
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