Effect of gibberellie acid on growth, flowering and corm yield in three cultivars of gladiolus

Field experiments were carried out to study the effect on different cultivars (Red Beauty, Jester and Summer Face) of gibberellie add levels (0,100,200 and 300 ppm) on growth, flowering and corm yield in gladiolus,during2003-2004and2004-2005. The of gibberellie add (GA.) solution for 24 h before planting. The findings revealed that cultivars and gibberellie add significantly affected all the growth, flowering and conn yidd parameters of gladiolus. Earliest sprouting (654 and 6.82 day) and maximum plant height (100.47 and 102.39 cm), number of leaves per plant (9.49 and 9.68), leaf length (85.00 and 82.80 cm) and width (10.96 and 10.23 cm), leaf area (159.22 and 153.82 cm2), spike length (73.96 and 75.45 cm), number of florets per spike (18.01 and 16.46), rachis length (62.85 and 60.47 cm), floret length (13.01 and 12.83 cm), number of conns per plant (57.16 and 48.22), weight of conns (47.95 and 49.21 g) and vase life (14.33 and 13.70 day) were recorded with GA3 ^® 200 ppm and variety Red Beauty.