Effect of Plant Growth Regulators on Seed Yield and Seed Quality Traits in Tomato (Solanum lycopersicum L.) cv. Kashi Adarsh

A field experiment was conducted at the College of Agriculture and Research Station, Kunkuri, Jashpur, Chhattisgarh, during rabi 2020-21 with an aim to standardize foliar spray of plant growth regulator for higher seed yield in tomato. The experiment was laid out in randomized complete block design having nine treatments and three replications. Seedling quality traits were recorded in laboratory in completely randomized design. Foliar application of Gibberellic acid (GA3), Naphthaleneacetic acid (NAA), Cycocel and Salicylic acid in various concentrations in tomato were applied as foliar spray at 30 and 45 days after transplanting of tomato seedlings of cultivar Kashi Adarsh. Results revealed that maximum plant height (121.89 cm), number of branches per plant (10.39), number of fruits per plant length of fruit (33.06), length of fruit (4.66 cm), diameter of fruit (4.52 cm), seed yield per plant (19.14 g) was recorded in treatment foliar spray of GA3 at 50 ppm. In laboratory condition seedling traits were evaluated and the highest germination (96.25 %), root length (6.78 cm), shoot length (8.76 cm), root fresh weight (0.81 g), shoot fresh weight (3.37g), root dry weight (0.061 g), shoot dry weight (0.209 g), vigour index- I (789.25) and vigour index- II (22.66) was also recorded in GA3 at 50 ppm.