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Table 4 Effect of chitosan and calcium carbonate (0, 20 and 40 mg/l) on photosynthetic pigments and IAA (µg/100 g fresh wt) of wheat plant growing under different salinity levels (0, 5000 mg/l)

From: Attenuation of negative effects of saline stress in wheat plant by chitosan and calcium carbonate

Treatments (mg/l) Chlo-a Chlo-b Chlo-a/Chlo-b Carotenoids Total pigments IAA (µg/100 g fresh wt)
Control 12.44 7.52 1.65 2.50 22.46 26.97
0 mg/L saline water       
 20 mg/L chitosan 13.52 8.08 1.67 3.05 13.52 34.07
 40 mg/L chitosan 14.57 8.60 1.69 3.75 14.60 44.07
 20 mg/L CaCO3 13.36 7.96 1.68 2.64 13.23 31.53
 40 mg/L CaCO3 13.89 8.27 1.68 3.38 13.83 40.04
5000 mg/l saline water 10.41 6.67 1.56 2.60 19.67 19.79
5000 mg/L saline water       
 20 mg/L chitosan 11.71 7.20 1.63 3.33 13.20 25.16
 40 mg/L chitosan 12.47 7.63 1.63 3.85 13.76 27.81
 20 mg/L CaCO3 11.30 6.95 1.63 3.28 12.14 25.95
 40 mg/L CaCO3 12.04 7.38 1.63 3.80 13.00 30.21
LSD (5%) 0.11 0.14 0.04 0.14 0.25 1.55