Skip to main content
Fig. 3 | BMC Plant Biology

Fig. 3

From: Responses of leaf gas exchange attributes, photosynthetic pigments and antioxidant enzymes in NaCl-stressed cotton (Gossypium hirsutum L.) seedlings to exogenous glycine betaine and salicylic acid

Fig. 3

Response to exogenous glycine betaine (GB) and salicylic acid (SA) treatments under salt stress of (a) maximal photochemical efficiency of photosystem II (FV/FM), b quantum efficiency of photochemical transports used for photosynthesis (ΦPSII), c quantum efficiency of thermal dissipation promoted by the photoprotective non-photochemical quenching via the xanthophyll cycle (ΦNPQ), and d combined quantum efficiency of fluorescence and constitutive thermal dissipation (Φf,D). CK = Control; GB2.5 = 2.5 mM GB; GB5.0 = 5.0 mM GB; GB7.5 = 7.5 mM GB; SA1.0 = 1.0 mM SA; SA1.5 = 1.5 mM SA; SA2.0 = 2.0 mM SA; and ST = saline treatment (150 mM NaCl). All data are mean ± standard deviation. Differences between treatments having different letters above the error bars are significant at P < 0.05

Back to article page

BMC Plant Biology

ISSN: 1471-2229

Contact us