Table 4 Effect of SPM on lutein content (µg µl⁻¹) in water deprived sweet corn genotypes (n = 3). Different small letters indicate significant differences (p ≤ 0.05) among the treatments of each genotype, and different capital letters indicate significant differences (p ≤ 0.05) among genotypes within each treatment. Stomatal Conductance: SPM generally enhanced stomatal conductance across all genotypes. Dessert recorded a 23.7% increase with SPM alone and a 59.7% recovery under 8% PEG with SPM. Messenger exhibited an 80.7% increase in stomatal conductance under 12% PEG with SPM. Tyson showed the highest response, with conductance increasing by 87.0% with SPM alone and further enhanced by 50.2% under 8% PEG. Royalty also demonstrated significant recovery, with stomatal conductance increasing by 44.2% under 12% PEG with SPM (Table 5).

From: Spermine driven water deficit tolerance in early growth phases of sweet corn genotypes under hydroponic cultivation