The effect of different methods of application of gibberellic acid on morphophysiological and biochemistry indices and ‎Jerusalem Cherry fruit number (Solanum pseudocapsicum L.)

The greenhouse experiment was performed using ‎Jerusalem cherry affected by gibberellic acid (GA3) in four levels (zero (control), 100, 200, and 400 mg/lit) and three types of consumption (foliar, drip treatment, and foliar + drip treatment) application. The results showed that the reciprocal effect of experimental factors on plant height, lateral shoot length, lateral shoot number, fruit number, root length, root wet weight, stem wet weight, chlorophyll a, chlorophyll b, total chlorophyll, pigment function, chlorophyll index, and resuscitate sugars were significant. Simultaneous application of foliar spray and soil consumption + GA3 increased carotenoid and leaf area ratio compared to the use of each treatment alone. According to the comparison of means, the highest amount of chlorophyll a (19/75 µg/ml), chlorophyll b (4/63 µg/ml), total chlorophyll (25/27 µg/ml), and the total amount of pigments (27/67 µg/ml) were obtained by leaves foliar spray and drip treatment with the concentration of 400 mg/lit, drip treatment with 200 mg/lit condensation, and foliar spray and drip treatment with the distribution of 200 mg/lit. According to the results, the use of GA3 hormone causes an increase in the number of fruits, pigment performances, and reducing sugars in a ‎Jerusalem cherry. The methods used in GA3 consumption as a hybrid application leaves foliar spray plus soil application compared to drip treatment and foliar spray individually, showing better results. Therefore, the simultaneous foliar + drip treatment method is recommended as a suitable method for using GA3 to improve the appearance and photochemistry characteristics of a Jerusalem cherry.