Growth and flowering of Asiatic lily (Lilium × asiatica) cv. Litouwen as affected by GA3 and NAA under naturally ventilated polyhouse conditions of Prayagraj

The present investigation was carried out under naturally ventilated polyhouse, Department of Horticulture, SHUATS, Prayagraj, Uttar Pradesh. In the month of December 2020 and the observations recorded up to February and March 2021. There were nine treatments comprising of two growth regulators viz., GA3 (200, 250, 300 and 350 ppm), and NAA (50,100,150 and 200 ppm) along with control. The whole experiment was laid out following in a Randomized Block Design (RBD) with three replications. The results revealed that among the Lilium cv. LITOUWEN foliar application of 250 ppm GA3 significantly increased plant height (28.0 cm), as recorded data GA3 @ 250 ppm has enhanced bud length (5.9 cm), bud diameter (18.2 mm) GA3 @ 250 ppm, flower diameter (17.7 mm) GA3 @ 250 ppm, stalk length (43.4 cm). Whereas application of GA3 350 ppm enhanced significantly maximum stalk diameter (5.83 mm).