The present experiment entitled "Effect of pre-plant soaking of corms in bio-regulators on growth, flowering, yield and quality in gladiolus (Gladiolus grandiflorus L.) cv. Rani." was carried out at the Jambuvadi Farm, Department of Horticulture, J. A.U., Junagadh (Gujarat) during 2019 to 2020. The results of the study indicated that, the pre-plant soaking of corms in bio-regulator GA3 (150 ppm) was found effective for earlier sprouting (6.90 days), maximum plant height (78.74 cm) and number of leaves (13.62). Regarding flowering characters, the GA3 150 ppm responded best especially in commercial traits like spike length (86.82 cm), rachis length (40.30 cm), number of floret/spike (10.63), diameter of 2 nd floret (13.09 cm) and duration of flowering (22.34 days).

The present experiment entitled "Effect of pre-plant soaking of corms in bio-regulators on corms and cormels production in gladiolus (Gladiolus grandiflorus L.) cv. Rani." was carried out at the Jambuvadi Farm, Department of Horticulture, J. A.U., Junagadh (Gujarat) during 2019 to 2020. The results of the study indicated that, the pre-plant soaking of corms in bio-regulator BA @ 50 ppm was found effective for maximum corms yield (4.27 t/ha). The maximum cormels yield (2.13 t/ha) was found in pre-plant soaking of corms in bio-regulator of thiourea @ 3%. While maximum corm average weight (47.91 g) and diameter of largest corm (5.76 cm) was found in pre-plant soaking of corms in bio-regulator of GA3 @ 150 ppm.