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Fig. 3 | BMC Plant Biology

Fig. 3

From: Exogenous spermidine is enhancing tomato tolerance to salinity–alkalinity stress by regulating chloroplast antioxidant system and chlorophyll metabolism

Fig. 3

Effect of Spd on URO III and PBG content in tomato seedlings. CK, 1/2 Hoagland’s solution; S, 75 mM saline–alkaline solution (NaCl: Na2SO4: NaHCO3: Na2CO3 = 1:9:9:1); SS, sprayed with 0.25 mM Spd and treated with 75 mM saline–alkaline solution. a and c represent cv. Zhongza No.9; b and d represent cv. Jinpengchaoguan

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