Vol. 12, Issue 10 (2023)

Author(s):
Dhruvi Prajapati, NS Joshi, Darshana Patel and KS Solanki

Abstract:
An investigation was conducted on the response of plant growth regulators on growth and flowering of spider lily (Hymenocallis littoralis L.) in Department of Floriculture and Landscape Architecture, College of Horticulture, Junagadh, Junagadh Agricultural university during the academic year 2022-2023. The experiment was laid out in Randomized Block Design (RBD) with four replication and sevan treatments viz., Gibberellic acid (200 and 250 ppm), Naphthalene acetic acid (150 and 250 ppm), Brassinosteroid (3 and 5 ppm) along with the control (water spray). At 45 and 60 days after dealeafing, the plants received two sprays of various plant growth regulators. The results revealed that GA₃ @ 250 ppm recorded maximum plant height (64.09, 75.44 and 79.28 cm), number of leaves (32.88, 49.37 and 60.09), leaf length (62.08, 69.75 and 75.52 cm), leaf width (6.21, 6.26 and 6.42 cm), leaf area (127.75, 188.70 and 236.05 cm²), plant spread (E-W) (68.35, 72.33 and 75.57 cm) and plant spread (N-S) (68.05, 77.30 and 80.10 cm). whereas, minimum days taken for spike emergence (52.01 day) and first flower emergence (59.40 day) and maximum flowering duration (124.50 day) was recorded with GA₃ at 250 ppm.