A comparative study on growth, flowering and corm production as influenced by cut corms and growth regulators in gladiolus (Gladiolus grandiflorus L.)

Abstract

The present investigation was carried out during rabi season of 2019-2020 at field Experiment. Department of Horticulture, Naini Agriculture Institute, Sam Higginbottom University of Agriculture Technology and Science Prayagraj (U.P.), India. The experiment was laid out in randomized block design with three replications. Treatments consisted of ½, ⅓, ¼ cut corms and growth regulators (GA3 150ppm, 200ppm, 250ppm and BA200ppm, 250ppm, 300ppm) along with control (full corms). Among the different cut corms ½ cut corm as planting material gave the best performance in terms of good growth, flowering and number of daughter corms and spikes/ha and for corm yield and spike yield/100 corms is ¼ cut corm performed best. Among the growth regulators, GA3 @250 ppm performed better with respect to growth quality, flowering and for number of daughter corms and spikes/ha, corm yield and spike yield/100 corms is BA @ 300ppm performed best. Comparison between cut corms and growth regulators, GA3 @250 ppm performed best. BA @ 300ppm gave maximum B:C ratio followed by ¼ cut corm. Hence, GA3 @250 ppm can be recommended for good growth, flowering quality and corm production while for corm multiplication, BA @ 300ppm and ¼ cut corms can be used.