Vol. 12, Issue 6 (2023)

Author(s):
Bhumika Banjare, SP Tiwari, Manendra Kumar Ghritlahare and Kavita Sahu

Abstract:
Dendrobium is a significant orchid genera that are raised commercially for cut flowers. Evaluation of its growth pattern and flowering behaviour under different growth media is essential. Four different types of growth media were used to control the growth of the orchid. Four treatment of plant growth regulators, (GA₃:150 ppm, Kinetin: 100 ppm and AgNO₃:30 ppm) were applied along with control (Water spray) to elucidate the effect of plant growth substances on flower quality. The important parameters encompassed in the research study leaf area, leaf chlorophyll content, flower bud initiation (days), number of spike, spike length and spike girth. Study revealed that among the different growth media maximum leaf area (24.30 cm²) were recorded in cocopit media, leaf chlorophyll content (SPAD) (53.54) recorded highest in charcoal media, Minimum days was required for flower bud appearance in combination of Charcoal+Kinetin:100 ppm (23 days), Number of spike per plant was found higher in combination of Charcoal media+GA₃:150 ppm (2.6), Spike girth significantly increased by Charcoal media (2.0 cm) and Kinetin:100 ppm (1.90 cm).