Document Type : Research paper
Authors
1
Master Program of Agronomy, Faculty of Agriculture, Universitas Padjadjaran, Sumedang 45363, Indonesia
2
Department of Agronomy, Faculty of Agriculture, Universitas Padjadjaran , Sumedang 45363, Indonesia
Abstract
The decline in tomato productivity is often attributed to climate change, as it disrupts the flowering and fruit formation processes. Meanwhile, gibberellin (GA3) and paclobutrazol (PBZ) function to stimulate flowering in plants. Therefore, this research aimed to analyze the influences of GA3 and PBZ on the growth, yield, and quality of tomato fruit. The experiment was conducted from June to September 2022. A randomized complete block design (RCBD) was used consisting of control (0 ppm), GA3 (50 ppm, 100 ppm, and 150 ppm), and PBZ (50 ppm, 100 ppm, and 150 ppm) treatments. The results showed that GA3 at 100 ppm increased plant height, number of flowers and fruits, fruit weight, Hue° value, and vitamin C content. GA3 treatment at 150 ppm enhanced lycopene, β-carotene, and total carotenoid, while paclobutrazol at a concentration of 50 ppm improved the peel color (L* and b*). PBZ at 100 ppm increased the fruit diameter and the 150 ppm treatment caused an increase in leaf chlorophyll index, flowering age, fruit set, soluble solids content (SSC), fructose, glucose, and total sweetness index (TSI) in Tymoti F1 tomato.
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