Indian Journal of Ecology

A field experiment was conducted during the autumn season of 2017 on two locations to study the effect of some subspecies Corn (sweet corn, corn oil and maize), Detasseling (De) and foliar application of Gibberellic acid (GA3) at concentration 100 mg.L⁻¹ on growth parameters (plant height, leaves number, total chlorophyll and leaves area), yield components (grains number, aer number, weight 500 grains and production), corn silk parameters (fresh and dry weight, plant yield and production) and some antioxidant compounds (total carotenoids, ascorbic acid and glutathione) of corn silk. Results of analysis of variance showed that detasseling were given decrease significantly impact (P<0.05) on growth parameters and yield components, but it was increased corn silk parameters and its content of antioxidant compounds compare with control, while spraying GA3 were suggested superiority significant compare with control and detasseling treatments by increased growth parameters, which accumulated in grain production to be 15.47 and 16.20 ton.h⁻¹ on two locations respectively. The combined treats between detasseling and spraying GA3 were given high amount of corn silk production and total carotenoids, ascorbic acid and glutathione on treat CO+De+GA3 which gave (9.91, 10.25, 97.23, 130.12, 15.89 and 17.26 mg.kg⁻¹ DW) on two locations respectively.