Effect of Plant Growth Regulators on Growth and Yield Attributes of Tomato (Solanum lycopersicom Mill.)

Abstract

during the Kharif season of 2016-2017. The experiment was laid out in Randomized Block Design with ten treatments in three replication consist of three levels of each growth regulator i.e. GA 3 at 10, 20, 30 ppm, NAA at 20, 30, 40 ppm and 2,4-D at 2.5, 5.0, 7.5 ppm. Maximum plant height (96.18 cm), maximum number of primary and secondary branches, and maximum fruit per plant (46.06), fruit yield per plant (1320.0 g) and fruit yield per hectare (52.5 t/ha) was observed with the application of GA 3 at 30 ppm. However, maximum number of flowers was obtained with the application of 2,4-D (5 ppm). The results indicated that the use of GA 3 at specific concentration of 30 ppm, considerably increased the weight of fruit and significantly increased total yield up to 52.5 t/h.

Optimal Use of Plant Growth Regulators for Improved Growth, Yield, and Economic Returns of Winter Tomato (Solanum lycopersicum) in arid regions

“…With GA3, significantly highest fruit yield per plant (2.5 kg) and fruit yield ha -1 (29.3 t) over control was observed with 75 µg mL -1 , which incidentally was at par with application of 50 µg mL -1 . These findings are in agreement with the findings of Singh et al (2019) and Ranjeet et al (2014). The application of GA3 augments photosynthesis, leading to increased plant biomass which resulted in an increased fruit set, which ultimately led to more fruit set percentage, more fruit per plant, and higher fruit yield.…”

“…The application of 75 µg mL -1 GA3, though at par with 50 µg mL -1 GA3, produced highest values of the number of fruits per plant at final harvest (35.3) and fruit weight (81.7 g) of tomato (Table 1). Similar results were observed by Singh et al (2019) andBhosale, (2000). The more production of flower primordia (Ujjawal et al, 2018) and efficient photosynthate allocation to reproductive parts attributes to these trends.…”

Effect of Salicylic acid, 2,4-dichlorophenoxyacetic acid and gibberellic acid on growth, flowering, and fruit quality of Cape gooseberry (Physalis peruviana L.)

“…Increased in TSS caused by higher GA 3 content, and higher TSS: Acid ratio in fruits is caused by lower acidity values. Singh and Lal (2001) supported the aforementioned conclusion. The maximum ascorbic acid content observed significantly under T 9 (53.3 mg) followed by T 8 (50.89 mg).…”

Tomato Response Evaluation through Fertilization and PGRs Application under Temperature Differentiation in Late Winter

“…Again, GA3 and SA's influence on stimulating the vegetative and reproductive behaviors of tomato under differential temperature and humidity conditions might be due to their ability to promote plants defense mechanisms against stresses [48]. Ogugua et al [48] and Singh et al [49] noted that GA3, among different exogenous plant growth regulators, exhibited significant positive impact on superior growth and yield in tomato. In addition, Guo et al [36] and Ali et al [50] examined GA3 success in fluctuating summer temperature stress mitigation in tomato.…”