Effect of GA_3 on growth, Flowering and VASE Life of gladiolus cultivars

摘要

An experiment was conducted to study the effect of on growth, flowering and vase life of gladiolus cultivars. The study involved four concentration of GA3 (control, 100 ppm, 200 ppm, 300 ppm and 400 ppm) was sprayed at 30th and 60* day after plantingon five cultivars (Archana, Gunjan, J.V Gold, Sabnum and Snow Princes) of gladiolus. The results revealed that maximum length of leaf and width of longest leaf were recorded when GA3 was sprayed at 400 ppm on cvs. Sabnum and Gunjan. Among flowering parameters eady spike emergence was noticed in cv. Sabnum when, GA3 was sprayed at higher concentrations (300-400 ppm). In general, higher size of first and fifth floret was recorded with cv. J.V. Gold at 200-300 ppm GA_3 GA_3 at 300 ppm also exerted maximumlength of spike, whereas maximum number of florets/spike was recorded with cv. Snow Princess when GA3 was applied at 100-200 ppm, while maximum number of florets open at a time (7.33) was noticed with cv. Snow Princess when GA_3 was applied at 200-300 ppm. Maximum vase life (17.00) days was noticed with cv. Sabnum when GA-3 applied at 200-400 ppm. The data from this study indicated that effect of GA3 on growth, flowering and vase life of gladiolus cultivars.