Effect of plant bioregulators on quality, productivity and profitability of tuberose cv. Prajwal

Abstract

In order to explore the possibility of improving the quality, productivity and profitability of tuberose (Polianthes tuberosa L.) cv. Prajwal using different plant bioregulators, an experiment was conducted during 2015-16 and 2016-17 at Horticultural Research Station, Kovvur of Dr. YSR Horticultural University, Andhra Pradesh. Five plant bioregulators (Gibberellic acid, Benzyl Adenine, Salicylic acid, Ethephon and Spermidine) each at two concentrations in addition to water spray as control were evaluated in randomised block design with three replications. The results revealed that the foliar sprays of plant bioregulators at 30 and 60 days after sprouting of bulbs, significantly influenced floret quality, floret yield and bulb yield. Significantly maximum length (6.12 cm), diameter of floret (4.34 cm), 100floret weight (210.85 g), floret yield (12.02 t ha -1 ) and bulb yield (11.57 t ha -1 ) was recorded in the plants sprayed with GA3 at 200 ppm over control. The same treatment recorded the highest benefitcost of 3.02.

Potential Role of Bio-Stimulants in Administering Floral Characters of Asiatic Lily CV. Indian Summerset

“…More number of flowers/stalk (3.8) were reported in T9 (brassinolide at the rate of 20 ppm) which was followed by T8 (brassinolide at the rate of 15 ppm, 3.4) while T1 (control) reported significantly lesser number of flowers per stalk (2.5). More number of flowers per stalk may be attributed to the positive effect of brassinolide treated plants empowering production of more photosynthates which resulted in the presence of more assimilates to shoot apex at the time of the commencement of the floral primordial [20]. Brassinolide is also known to positively enhance the growth of reproductive part which may have eventually lead to positive influence on formation of higher number of buds [21].…”

“…Significantly more number of flower stalks/m 2 (33.3) were reported in T9 (brassinolide at the rate of 20 ppm) which was found to be at par with T5 (triacontanol at the rate of 25 ppm, 32.6), T13(nitrobenzene at the rate of 400 ppm, 32.6), T8 (brassinolide at the rate of 15 ppm, 32.0), T11 (nitrobenzene at the rate of 200 ppm, 32.0), T7 (brassinolide at the rate of 10 ppm, 31.4), T12 (nitrobenzene at the rate of 300 ppm, 31.4), T6 (brassinolide at the rate of 5 ppm, 30.8), T3 (triacontanol at the rate of 15 ppm, 30.2) while T1 (control) reported significantly lesser number of flower stalks/m 2 (26.5). More number of flower stalks may be attributed to the positive effect of brassinolide treated plants which resulted in the presence of more assimilates to shoot apex at the time of the commencement of the floral primordial [20]. Brassinolide is also known to Positively enhance the growth of reproductive part which may have eventually lead to positive influence on formation of higher number of flower stalks [21].…”

Effect of Foliar Spraying with Boron and Brassinolide on the Growth and Flowering of Gladiolus

“…Brassinosteroids (BRS) is a plant hormone that affects several processes that contribute to plant development, including seed germination, flowering and senescence, and helps the plant to withstand abiotic stresses [7]. 1259 (2023) 012060 IOP Publishing doi:10.1088/1755-1315/1259/1/012060 2 Indicated [8] Lakshmi, 2021 showed spraying at a concentration of 1 ppm boosted vegetative development markers in tuberose, including early flowering and improved flower quality, leaf area, and the quantity of leaves. Boron is a micronutrient, but it plays a crucial role in a plant's development and health.…”