In order to investgate the effects of salicylic acid(SA) on seed germination and seedling growth under NaCl stress,we took lettuce(Lactuca sativa L.cv.Taiwan xiuqiu) seeds as experiment material.The results showed that 0.1～0.5 mmol/L SA could increase the quantity,speed,quality of lettuce seed germination,as well as promote seedling growth under 150 mmol/L NaCl stress.The optimum treatment concentration of SA was 0.25 mmol/L.
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