The Influence of 1‐Triacontanol on the Growth, Flowering, and Quality of Potted Bougainvillea Plants (Bougainvillea glabra var. “Elizabeth Angus”) under Natural Conditions

Abstract

Selected physiological and biochemical parameters were monitored at the vegetative and reproductive growth stages in potted Bougainvillea plants treated with five different concentrations of TRIA. Advanced flowering, flower bud number, and blooming rate increased significantly with 0.5 and 1.0 mg/L TRIA treatments. Similarly, photosynthetic rate, pigment content, quantum yield, and stomatal conductance increased significantly with 2.5, 1.0, and 5.0 mg/L TRIA treatments. Higher levels of N, P, and K, as well as increased total soluble solids (TSS) and higher sugar and protein contents, were recorded in treated plants. Furthermore, 46% more flowers, a 1.5-fold increase in bract weight, increased longevity, and 40% less leaf abscission were recorded following 2.5 mg/L TRIA treatment. Phenol and flavonoid contents, sucrose phosphate synthase (SPS), and antioxidant activities were also markedly increased with 2.5 and 1.0 mg/L TRIA treatments. However, ethylene production was significantly lower in the treated plants. Positive correlations were observed between leaf TSS and flowering time and flower number, between leaf sugar content and bract weight, and between net photosynthesis and bract growth and dry matter production. It can be concluded that the foliar spray of TRIA stimulates growth, enhances flowering, and improves the quality of potted Bougainvillea plants.

Effect of different rates of inorganic fertilizer on physiology, growth and yield of okra (Abelmoschus esculentus) cultivated on BRIS soil of Terengganu, Malaysia

“…Carbon dioxide is important for okra plant as it is required in production of carbohydrates during photosynthesis process. Khandaker et al (2013b) reported that that stomatal conductance affects the net photosynthetic rate by regulating CO 2 fixation in the leaf mesophyll tissue and is positively correlated with photosynthesis. The results showed that different dose of NPK fertilizer produced significant effect on the stomatal conductance of okra leaf.…”

Chemical Profiling of Acalypha Indica Obtained from Supercritical Carbon Dioxide Extraction and Soxhlet Extraction Methods

“…with 6.64% and 32.52%. These two active compounds have interesting biological activities as tumor inhibitor and plant hormone, respectively [20][21][22][23] ( Table 2). Using SFE method, very high extraction selectivity could be achieved, but with lower product yield (Table 1).…”

THE EFFECT OF PLANT GROWTH REGULATOR TRIACONTANOL TO THE GROWTH OF CACAO SEEDLINGS (Theobroma cacao L.)

“…Triacontanol is an effective growth regulator that can significantly improve plant growth (Tantos et al, 1999;Tantos et al, 2001;Malabadi and Nataraja, 2007;Perveen et al, 2010;Aziz et al, 2013;Khandaker, 2013;Perveen et al, 2014). This growing regulatory substances are effective on the biosynthesis of secondary metabolites and role plays to set up the process associated with the physiology and biochemistry of plants (Jaybhay et al, 2010).…”

“…Triacontanol given to the seed of some weeds and horticultural crops have an influence on the germination and its morphology (Hoagland, 1980). According to Khandaker et al (2013) that triacontanol sprayed on the leaves can stimulate growth, increase inflorescence, and improve the quality of crops. Samui and Roy (2007) also reported that no phytotoxic effect and no detrimental effect is given to plants and predators, respectively.…”