Abstract:

Using ROC22 as experimental materials, the sugarcane seeding leaves were sprayed by 0.5 mmol/L salicylic acid (SA), and then in low temperature stress at 7℃, the effects of SA on cold resistance of sugarcane seeding were studied. The results showed that pretreatment with 0.5 mmol/L SA reduced the relative conductivity and the contents of MDA, and increased the content of soluble sugar, soluble protein, and free amino acid, and slowed down the decreasing of leaf chlorophyll content. It indicated that SA could slow down the injury of sugarcane seeding under low temperature stress, and then increased cold resistance of sugarcane seeding.