Effect of plant growth regulators on growth and flowering of tuberose (Polianthes tuberosa L.) cv. single

Abstract

A field experiment was conducted to study the effect of plant growth regulators on growth and yield of tuberose (Polianthes tuberosa L.). Treatments of the experiment were as control (No plant growth regulators), NAA 100 ppm, NAA 200 ppm, NAA 300 ppm, NAA 400 ppm, GA3 100 ppm, GA3 200 ppm, GA3 300 ppm, GA3 400 ppm, 4-CPA 100 ppm, 4-CPA 200 ppm, 4-CPA 300 ppm and 4-CPA 400 ppm. Different concentration of growth regulators showed significant variation on most of the parameters. Tallest tuberose plant (68.9 cm), longest length of rachis (21.9 cm), highest number of floret/spike (41.2), highest diameter of spike (1.1 cm), maximum weight of single spike (40.1 g) and highest number of spikes per hectare (3.9 lac) were obtained from GA3 at 300 ppm.

Response of Tuberose (Polianthes tuberosa L.) cv. Pajwal to Flower Inducing Chemicals

“…Foliar spray with GA 3 200 ppm recorded significantly longest rachis length (39.95 cm) followed by GA 3 100 ppm (39.25 cm) (Table 3). The results are in close conformity with the findings of Rani and Singh (2013), Amin et al, (2017) in tuberose.…”

“…Significantly the longest spike length was noticed at both the concentrations of GA 3 . The results are in line with the findings of Rani and Singh (2013), Sultana et al, (2016), Amin et al, (2017) in tuberose.…”

“…Significantly highest spike girth was registered in plants sprayed with GA 3 200 ppm (4.42 cm) (Table 3). Similar results were reported Amin et al, (2017) in tuberose.…”

Response of Growth, Flowering, Cocrete Oil and Its Component of Polianthes tuberosa L. cv. Double to Phosphorus Fertilizer and Gibberellic Acid

“…GA 3 has the capability of modifying the growth pattern of treated plants by affecting the DNA and RNA levels, cell division and expansion, biosynthesis of enzymes, protein, carbohydrates and photosynthetic pigments (Ibrahim et al, 2010). Sajid et al, (2016) indicated that vegetative growth and flowering attributes were significantly affected by GA 3 treatments on Chrysanthemum morifolium (Amin et al, 2017). They reported that a rise in vegetative growth and flowering parameters of tuberose were linearly correlated with the increase of concentration of gibberellic acid.…”

Economics and variety adoption of tuberose: A farm level survey in Bangladesh

“…The increasing adaptation of flowers by the farmers has led to the costs and returns from flower cultivation to facilitate the growth of flower cultivation. Amin et al (2017) said it has a great economic potential for cut flower trade and essential oil industry. Tuberose (Polianthes tuberosa L.) is one of the most important tropical ornamental bulbous flowering plants with long lasting flower spikes cultivated for production.…”