Table 1. Gaseous exchange attributes of maize influenced by foliar applied growth promoting agents and sowing dates.
Seed Priming | Photosynthesis rate | Transpiration rate | Stomatal conductance | Internal CO2 concentration | ||||
---|---|---|---|---|---|---|---|---|
(μmol CO2 m-2 s-1) | (Mmol H2O m-2 s-1) | (Mol m-2 s-1) | (μmol mol-1) | |||||
S1 | S2 | S1 | S2 | S1 | S2 | S1 | S2 | |
Control | 12.09 f | 11.38 f | 2.92 d | 3.08 d | 0.20 de | 0.15 e | 98.25 d | 106.50 d |
Water spray | 14.26 def | 14.16 ef | 3.47 cd | 3.75 bcd | 0.18 de | 0.21 d | 118.75 c | 108.00 d |
MLE+H 2 O 2 | 23.47 a | 18.48 bcd | 4.70 a | 4.90 a | 0.29 bc | 0.28 bc | 167.50 a | 164.75 a |
SWE+ASA | 20.12 abc | 21.86 ab | 5.19 a | 4.91 a | 0.34 a | 0.32 ab | 157.00 ab | 161.00 ab |
ASA+SA+H 2 O 2 | 21.60 abc | 17.32 cde | 4.42 ab | 4.36 abc | 0.28 bc | 0.26 c | 152.25 b | 158.25 ab |
SWE+ASA+SA+H 2 O 2 | 23.64 a | 22.26 ab | 4.70 a | 4.79 a | 0.31 ab | 0.28 bc | 160.50 ab | 159.75 ab |
LSD at p = 0.05 for interaction | 4.47 | 0.93 | 0.05 | 10.68 |
S1: Early sowing; S2: Optimum sowing