Influência do paclobutrazol e da temperatura ambiente sobre o florescimento e frutificação da limeira ácida 'Tahiti'

Cruz, Maria do Céu Monteiro da; Siqueira, Dalmo Lopes de; Salomão, Luiz Carlos Chamhum; Cecon, Paulo Roberto

doi:10.1590/s1413-70542008000400017

Cited by 5 publications

(2 citation statements)

References 12 publications

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“…In 'Tahiti' acid lime tree, the PBZ application increased the plants flowering submitted to low temperatures conditions of 16 ºC, but was not effective in flowering induction under conditions of 25 ºC day / night 20 °C (Cruz et al, 2008).…”

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confidence: 88%

Flowering and vegetative growth of olive tree submitted to pruning and paclobutrazol application

Cruz¹,

Oliveira²,

Oliveira³

et al. 2011

Braz. J. Plant Physiol.

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This work focuses on the evaluation of flowering and vegetative growth of olive tree submitted to pruning and paclobutrazol application under field conditions with low temperatures during the winter. Two-years-old olive plant variety Grappolo 575, were submitted to light pruning, removing apical dominance, before treatments application. The treatments were organized in a 4×2 factorial scheme, respective to four PBZ concentrations tested: 0, 200, 400 and 800 mg L-1 of PBZ and two plants groups, with and without pruning, in randomized block with four replications. Paclobutrazol concentrations tested did not affect the olive tree flowering. The plant vegetative growth was reduced until 60 days after paclobutrazol application. Pruning resulted in stimulation of emission of vegetative shoots and reduction of flowering.Key words: Floral induction, growth regulators, management, Olea europaea L. resuMoCom o objetivo de avaliar o florescimento e o crescimento vegetativo da oliveira em plantas submetidas à poda e a aplicação do paclobutrazol foi conduzido um experimento em condições de campo com ocorrência de baixas temperaturas durante inverno. Plantas da variedade Grappolo 575, com dois anos de idade, foram submetidas a uma poda leve, retirando-se a dominância apical, antes da aplicação dos tratamentos, no mês de abril de 2009. Para a distribuição dos tratamentos, adotou-se o esquema fatorial 4×2, referente às quatro concentrações de paclobutrazol testadas e dois grupos de plantas, com e sem poda, em blocos casualizados com quatro repetições. As concentrações de paclobutrazol testadas não influenciaram no florescimento da oliveira. O crescimento vegetativo foi retardado até 60 dias após a aplicação do paclobutrazol. A poda estimulou a emissão de brotações vegetativas e reduziu o florescimento. palavras-chave: Indução floral, reguladores de crescimento, manejo, Olea europaea L.

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confidence: 88%

Flowering and vegetative growth of olive tree submitted to pruning and paclobutrazol application

Cruz¹,

Oliveira²,

Oliveira³

et al. 2011

Braz. J. Plant Physiol.

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“…Flower bud differentiation is associated with changes in hormones and sugars in plants [20,21]. In citrus, PBZ can inhibit growth by influencing the biosynthesis of gibberellin and inducing flowering [22]. High and low levels of endogenous GA in leaves were inversely or positively proportionally correlated with the number of flowers, respectively [23].…”

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confidence: 99%

Effects of Different Regulating Measures on the Floral and Nutritional Physiology of Lemon

Dong

et al. 2022

Agronomy

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Lemon is an important economic crop in the world and can bloom several times each year. The Dehong prefecture of Yunnan province is one of the main lemon-producing areas in China, and is a suitable area for planting high-quality lemons in China. However, the hot and rainy summers in Yunnan are not conducive to flower bud differentiation, which leads to low lemon yield. Therefore, normal flower bud differentiation is important to guarantee lemon production and quality. In this study, we selected some lemon trees for a pot experiment, and we sprayed the lemon leaves with gibberellin and paclobutrazol to regulate lemon flower formation. We set four separate concentration gradients for each regulator: 50, 100, 150, and 200 mg/L. The PBZ concentration gradients were 200, 400, 600, and 1200 mg/L. After the experiment, we determined and analyzed the morphological index and fruit quality of the lemon trees. The results showed that under the same cultivation and management conditions, spraying paclobutrazol substantially inhibited the growth of lemon shoots, increased the fruit setting rate, and improved the fruit yield. However, gibberellin considerably reduced the number of lemon flowering branches and promoted the vegetative growth of the lemons. When the concentration of paclobutrazol was 600 mg/L, the amount of lemon fruits reached the maximum, which remarkably increased the titratable acid and soluble solids contents of the fruit and ultimately increased the fruit quality compared with the control. Altogether, selecting the appropriate concentration of regulators to control the flowering and fruit setting of fruit trees is important and has value in guiding actual production.

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Fruit load restricts the flowering promotion effect of paclobutrazol in alternate bearing Citrus spp.

Martínez‐Fuentes

Mesejo

Muñoz-Fambuena

et al. 2013

Scientia Horticulturae

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Influência do paclobutrazol e da temperatura ambiente sobre o florescimento e frutificação da limeira ácida 'Tahiti'

Cited by 5 publications

References 12 publications

Flowering and vegetative growth of olive tree submitted to pruning and paclobutrazol application

Flowering and vegetative growth of olive tree submitted to pruning and paclobutrazol application

Effects of Different Regulating Measures on the Floral and Nutritional Physiology of Lemon

Fruit load restricts the flowering promotion effect of paclobutrazol in alternate bearing Citrus spp.

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