Work

Influence of exogenously sprayed growth regulators at different concentrations on grain biochemical constituents and yield traits of bread wheat

Year: 2024

Type: article

Abstract: Plant growth regulators play an essential role in plants' biochemical processes.In this study, foliar spray was applied using three growth regulators, gibberellic acid (GA3), naphthalene acetic acid (NAA), and 6-benzyl amino purine (BAP), to investigate their effects on wheat (Triticum aestivum L.) 'Giza-171' yield traits and grain biochemical constituents, including sugars, carbohydrates and protein.The assessed growth regulators (GA3, NAA, and BAP) were applied at 100 and 150 mg L -1 concentrations.The results indicated significant improvements in wheat grain yield and 1000-grain weight, which increased by 15.40% and 24.78%, respectively, using GA3 at 150 and 100 mg L -1 .In addition, the highest contents of protein and carbohydrates were observed with samples treated by the foliar application of NAA at 150 mg L -1 and BAP at 100 mg L -1 , respectively.The fat content in wheat grains increased by 1.97% and 2.73% with foliar spray with 150 mg L -1 NAA and 100 mg L -1 BAP, respectively.The lipid profile showed cis-linoleic acid was the primary fatty acid, followed by palmitic acid; the content of linoleic acid slightly increased with GA3 treatment to 50.42%, while palmitic acid significantly increased with 100 mg L -1 NAA.The total saturated and unsaturated fatty acids recorded 33.64% and 66.30%, respectively; the 150 mg L -1 NAA treatment had the lowest saturated fatty acid content.The SDS-PAGE profiles showed that growth regulators significantly enhanced the wheat protein where new bands appeared, especially in 100 mg L -1 GA3 and 100 mg L -1 BAP treatments.The applied growth regulators improved wheat yield, contents of some compounds, and nutritional value.

Source: Chilean journal of agricultural research

DOI: 10.4067/s0718-58392024000600769