Table 1 Leaf gas exchange during 15 days of water deficit in the maize hybrid BRS 1030 after the application of chitosan and its derivatives.

From: The foliar application of a mixture of semisynthetic chitosan derivatives induces tolerance to water deficit in maize, improving the antioxidant system and increasing photosynthesis and grain yield

Treatment Stress Days A (μmol CO2 m−2s−1) 1 day WD gs (mol m−2 s−1) 1 day WD A (μmol CO2 m−2s−1) 15 days WD gs (mol m−2 s−1) 15 days WD
IR 28.7E* 0.29E 27.77c 0.32c
WD 26.39E 0.16C 14.23a 0.19b
WD + SUC 21.2D 0.24D 19.89b 0.46e
WD + MCA 2.64ª 0.04A 22.77b 0.41d
WD + MS 7.02B 0.07B 22.16b 0.23b
WD + CHI 10.81C 0.06B 16.1a 0.15a
  1. *Means followed by the same uppercase letter for treatments with 1 day of water deficit and lowercase for treatments with 15 days of water deficit do not differ by the Scott-Knott test at 5% probability (P ≤ 0.05). IR, irrigated; WD, water deficit; WD + SUC, water deficit with foliar application of SUC; WD + MCA, water deficit with foliar application of MCA; WD + MS, water deficit with foliar application of SUC and MCA; WD + CHI, water deficit with foliar application of chitosan. A = leaf photosynthetic rate, gs = stomatal conductance.