Paclobutrazol reduces growth and increases chlorophyll indices and gas exchanges of basil (Ocimum basilicum)

Filho, F. B. Santos; Silva, Toshik Iarley da; Dias, Marlon Lemos; Alves, Antônio Carlos; Grossi, José Antônio Saraiva

doi:10.1590/1519-6984.262364

Cited by 4 publications

(2 citation statements)

References 26 publications

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“…Growth regulators are associated with important physiological and biochemical effects in plants. Triazole compounds are related to the increase of enzymes, antioxidant molecules and optimization of foliar gas exchanges (IQBAL et al, 2020;SANTOS FILHO et al, 2022). In this study, the highest chlorophyll levels and green color intensity in the leaves (SPAD index) were observed for the seedlings treated with PBZ.…”

Section: Discussionmentioning

confidence: 60%

Paclobutrazol as a strategy to induce reproductive precocity in sour passion fruit

et al. 2023

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The adoption of growth regulators can be an alternative method to modulate the quality of the propagation material and obtain reproductive precocity. The objective was to evaluate if a gibberellin biosynthesis inhibitor affects the morphophysiological, biochemical and anatomical parameters of sour passion fruit seedlings and if such alterations affect the reproductive period. Two trials were conducted. In trial I, 40 days after emergence, the seedlings were immersed up to the substrate level in paclobutrazol (PBZ) solutions at concentrations of: 0, 40, 80, 120 and 160 mg L-1. At 45 days after the application of PBZ - DAA, the morphophysiology, biochemistry and anatomy were evaluated. Trail II was conducted in pots, using seedlings from trail I with 45 DAA of PBZ. At 200 days after transplanting, accumulation of shoots and roots fresh and dry mass (g), flowering speed index, total number of reproductive organs and SPAD index were evaluated. In seedlings, restriction of shoot growth induced by PBZ was associated with root increment, seedling quality, photosynthetic pigments and optimization of gas exchange. A shorter period of transition from the juvenile – vegetative phase to reproductive is observed when the seedlings were submitted to PBZ concentrations.

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Section: Discussionmentioning

confidence: 60%

Paclobutrazol as a strategy to induce reproductive precocity in sour passion fruit

et al. 2023

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“…This may be associated with the ability of triazoles to raise cytokinin levels and thus increase chloroplast differentiation, chlorophyll biosynthesis, and maintenance of the integrity of this molecule (SANTOS FILHO et al, 2022).…”

Section: Resultsmentioning

confidence: 99%

Zucchini cultivation under salt stress and exogenous application of paclobutrazol

Lacerda,

Laurentino,

Bonou

et al. 2024

Rev. Caatinga

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Salinity is considered an obstacle to the production system that limits the growth and yield of crops around the world. Therefore, it is essential to develop strategies to minimize the effects of salinity and increase yield, especially in the semi-arid region of the Northeast, which has limited water resources of good quality for irrigation. The objective was to evaluate the effects of applying paclobutrazol on zucchini crop under salt stress. The experiment was conducted in a greenhouse, in a randomized block experimental design, in a 2 × 5 factorial scheme, with two salinity levels of irrigation water (0.6 and 4.0 dS m-1) and five concentrations of paclobutrazol - PBZ (0; 2; 4; 6 and 8 g L-1), and with four repetitions. Application of 8 mg L-1 PBZ increases stem diameter in zucchini under irrigation of 4.0 dS m-1. Chlorophyll b and total chlorophyll contents increase with PBZ concentration of 4 mg L-1 and irrigation of 0.6 dS m-1. PBZ concentration of 4 mg L-1 increases the relative water content while reducing electrolyte leakage in zucchini under salinities of 4.0 and 0.6 dS m-1 respectively. Root, stem and leaf dry mass of zucchini increases when plants are irrigated with water of 0.6 dS m-1 and subjected to PBZ concentration of 8 mg L-1. PBZ concentrations do not attenuate the effects of salinity on leaf area, crown volume and diameter, vegetative vigor index, chlorophyll a and carotenoids.

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Methyl Jasmonate Mitigates Drought Stress in Purple Basil by Enhancing Photosynthesis and Secondary Metabolism

Lopes,

Dias,

Henschel

et al. 2024

J Plant Growth Regul

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Paclobutrazol reduces growth and increases chlorophyll indices and gas exchanges of basil (Ocimum basilicum)

Cited by 4 publications

References 26 publications

Paclobutrazol as a strategy to induce reproductive precocity in sour passion fruit

Paclobutrazol as a strategy to induce reproductive precocity in sour passion fruit

Zucchini cultivation under salt stress and exogenous application of paclobutrazol

Methyl Jasmonate Mitigates Drought Stress in Purple Basil by Enhancing Photosynthesis and Secondary Metabolism

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