Among plant growth regulators, polyamines (PA) have a major role in diverse plant physiological responses throughout vegetative and reproductive phases and senescence.
The present study was conducted to investigate the impact of polyamine on different physiological and biochemical aspects of hydroponically grown rose (cv. Dulce Vita) plants. Putrescine (Put) (1, 2, and 3 mM), Spermidine (Spd) (0.5, 1, and 1.5 mM), and Spermine (Spm) (1, 2, and 4 mM) were sprayed on rose plants during growth and subsequently, different aspects of vegetative growth, flower quality, mineral uptake, and some biochemical responses of the plants were studied. Foliar application of Spd at 1.5 mM concentration caused the highest flower stem length and flower bud size.
Vase life was affected by PA application as Spd had the greatest beneficial outcome. Absorption and accumulation of the studied macro-and micro-nutrient contents of leaves were also influenced by PA treatment. ACC synthase and chlorophyllase activity in leaves of cut flowers harvested from PA-treated plants was affected, where 4 mM Spm treatment led to the minimum levels of these compounds.
Although malondialdehyde production in leaves of Dolce Vita rose increased during postharvest life as flowers aged, the increment was retarded by PA application.
Jowkar, Mohammad Mahdi & Hosseinifarahi, Mehdi & Bayanati, Mina & Malusa, Eligio. (2023). Mineral uptake and biochemical responses of hydroponically grown Rosa hybrid cv. Dulce Vita to polyamines. 10.30495/ijpp.2023.1954601.1407.
Read the complete study at www.researchgate.net