INVESTIGATING THE ROLE OF PLANT GROWTH REGULATORS IN IMPROVING NUTRITIONAL QUALITY OF BROCCOLI

Abstract

This study investigates the role of plant growth regulators (PGRs) in improving the nutritional quality of broccoli (Brassica oleracea var. italica), focusing on their effects on key nutrients such as vitamins, antioxidants, and bioactive compounds. The experiment applied four different PGR treatments—gibberellic acid (GA3), cytokinin (CK), auxins (IAA), and abscisic acid (ABA)—at varying concentrations to assess their impact on the nutritional composition of broccoli. The results revealed that GA3 significantly enhanced vitamin C, carotenoid, and protein content, with a marked increase in antioxidant activity. Cytokinin (CK) treatment was particularly effective in boosting glucosinolate levels, which are linked to cancer-preventive properties. ABA also showed substantial improvements in antioxidant content, making it a potential agent for enhancing the health-promoting properties of broccoli. The study demonstrated that PGR treatments increased luxurious levels of essential minerals calcium, magnesium, and potassium which increased broccoli micronutrient content overall.  Experimental results demonstrate that PGRs synergistically enhance crop nutrient levels which points to their potential use in ecological agricultural systems for value improvement in vegetable crops.  This study presents essential findings regarding PGR applications for enhancing vegetable nutrition while respecting both farming output and human health principles.