Effects of exogenous SA on photosynthetic parameters of Leymus chinensis seedlings under extreme drought As shown in Figure 5A , the Chl of Leymus chinensis seedlings exhibited an overall trend of initially increasing and then decreasing with increasing SA solution concentration.
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Effects of exogenous salicylic acid on the adaptive capacity of <i>Leymus chinensis</i> seedlings under extreme drought conditions.
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