Sensitivity of ornamental pepper to ethylene

Ribeiro, Wellington Souto; Carneiro, Cristiana Leonor da Silva; França, Christiane de Fátima M; Pinto, Cleide Maria Ferreira; Lima, Paula Cristina Carvalho; Finger, Fernando Luíz; Costa, Franciscleudo Bezerra da

doi:10.1590/s0102-053620190415

Cited by 5 publications

(4 citation statements)

References 13 publications

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“…The damage caused by ethylene on fruit abscission depends on the period of exposure, concentration, temperature, the stage of fruit development and the sensitivity of species and varieties (Finger, Silva, Segatto & Barbosa, 2015). Santos et al (2013), Lima et al (2017) and Ribeiro et al (2019a), evaluating ornamental pepper genotypes for sensitivity to ethylene, reported that ethylene affected, in different degrees, the longevity of plants exposed to the hormone.…”

Section: Resultsmentioning

confidence: 99%

“…Ethylene is a plant hormone produced in low concentrations by the plants, regulating plant growth and development, flowering, fruit maturation and senescence processes (Chen, Etheridge & Schaller, 2005;Santos et al, 2013). However, exposure to high concentrations of ethylene can cause undesirable effects on the plant, such as abscission of leaves, flowers and fruits in different degrees and chlorophyll degradation (Lima et al, 2017;Nascimento et al, 2018;Ribeiro et al, 2019a).…”

Section: Introductionmentioning

confidence: 99%

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Effects of paclobutrazol on ethylene sensitivity of potted pepper cultivars

Nascimento

Araújo

Santos

et al. 2022

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Exposure to ethylene of ornamental plants is one of the factors that affect the life cycle post-production of these plants. The aim of this work was to evaluate the effects of paclobutrazol (PBZ) on the ethylene related responses of ten pepper cultivars of the genus Capsicum and one Solanum by simulating transport and commercialization. The cultivars were treated with PBZ at concentrations of 0, 5, 10 and 20 mg L-1 applied on the potted cultivation substrate. When the plants had 30% of ripe fruits, they were transferred to a 90 L sealed container and treated with 10 μL L-1 ethylene for 48 hours and then kept at room temperature. Percentages of leaf (LA) and fruit abscission (FA) the plants were recorded at every two days (48h, 96h and 144h). The design used was completely randomized, in an 11 x 4 factorial scheme. The PBZ did not completely inhibit the deleterious effects of exogenous ethylene on plants. However, the ‘Pérola Negra’ showed moderate sensitivity for leaf and fruit abscission, and the ‘Bode Vermelha’ for leaf abscission at a concentration of 10 mg L-1. PBZ prevented partially the abscission of fruits of the ‘Pirâmide Ornamental’ pepper at rates of 5 and 10 mg L-1, and ‘Tabasco’ pepper at a concentration of 10 mg L-1. In addition, cultivars showed darker foliage when treated with PBZ.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of paclobutrazol on ethylene sensitivity of potted pepper cultivars

Nascimento

Araújo

Santos

et al. 2022

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“…Considering the Northeast part of Brazil, the inferior quality of the marketed ornamental pepper plants turns out to be an aggravating factor, due to the distance from the largest potted plant producing center, located in São Paulo (Ibraflor, 2019). The main damages observed in these plants are related to the effect of ethylene released during transport, with an emphasis on the absence of flowers, fruits and leaves (Lima et al, 2017;Ribeiro et al, 2019).…”

Section: Resumo Parâmetros Genéticos E Seleção Simultânea Utilizando mentioning

confidence: 99%

“…These actions are based on new bills, such as Instituição da Política Nacional de Incentivo à Cultura de Flores e de Plantas Ornamentais de Qualidade (Institution of the National Policy to Encourage the Crop of Quality Flowers and Ornamental Plants) newly approved at Comissão de Agricultura e Reforma Agrária (PL 6912-2017) (Agriculture and Agrarian Reform Commission). These actions are based on selecting pepper accessions with ornamental potential; these accessions have been collected (Costa et al, 2019) and stored at the Capsicum Germplasm Bank of the Institution (BAGC/UFPI) (Monteiro et al, 2010).…”

Section: Resumo Parâmetros Genéticos E Seleção Simultânea Utilizando mentioning

confidence: 99%

Genetic parameters and simultaneous selection using traits of ornamental interest in pepper plants

et al. 2020

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Pepper plants of the genus Capsicum are widely grown worldwide. The Capsicum annuum species shows ornamental potential; nevertheless, in the state of Piauí, there has been a lack of studies on its performance, related to quality traits needed to meet market demand. The aim of this study was to estimate the genetic parameters and associations between traits of ornamental interest in C. annuum in order to indicate, by simultaneous selection of traits, accessions to start an ornamental pepper breeding program in Piauí. We evaluated 16 accessions of C. annuum under plastic house conditions at Universidade Federal do Piauí. Number of days to flowering, number of days to fruit maturation, plant height, number of fruits per plant, fruit persistence, fruit length, fruit width, leaf length and fruit weight were evaluated. A significant difference (p≤0.01) between accessions for all traits was noticed. Coefficient of genetic variation / coefficient of experimental variation [Cvg/Cve (%)] ratios were greater than 1 and the genotypic determination coefficient (H²) values were all greater than 89.95%. The estimates of the genotypic correlations were higher in relation to phenotypic correlations in most of the traits, however, according to path analysis, an effect of residual variable (0.59) was verified. According to the results, the accessions BAGC 98, 199, 207 and 236 can be used as parents to start an ornamental pepper breeding program in Piauí.

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Effect of growth regulator paclobutrazol on size fitting of basil as a potted plant

et al. 2023

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Basil (Ocimum basilicum L., Lamiaceae) is an herbal species cultivated primarily for culinary and aromatherapy. Basil plant height could reach more than 60 cm, and the plants tend to elongate, particularly in low-light environments. Our current study examined the potential uses of plant growth retardant paclobutrazol to control sweet basil height and improve potted basil’s ornamental quality. The treatment tested was paclobutrazol concentration at 0, 5, 10, and 20 ppm, applied as 100 mL media drenching per pot five weeks after planting. The control plants were water-drenched using the same volume at the same time. Basil treated with PBZ at 10 ppm or 20 ppm had significantly shorter, smaller shoot canopy diameter, node and leaf number than the control, but had a similar number of branches to the control. Basil treated with PBZ at 10 ppm or 20 ppm showed a more compact and bushy pot plants with the height to pot ratio of 1.5. Higher leaf chlorophyll, indicated by a higher index value, was recorded only with the PBZ concentration of 20 ppm compared to the control and the other PBZ concentrations. Basil growth responses to PBZ at 10 ppm were not significantly different from those treated with PBZ at 20 ppm, therefore the use of PBZ at a lower concentration (10 ppm) is preferable. Further studies should examine whether repeated PBZ applications at lower concentration is more effective in producing shorter and more compact pot plants.

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Sensitivity of ornamental pepper to ethylene

Cited by 5 publications

References 13 publications

Effects of paclobutrazol on ethylene sensitivity of potted pepper cultivars

Effects of paclobutrazol on ethylene sensitivity of potted pepper cultivars

Genetic parameters and simultaneous selection using traits of ornamental interest in pepper plants

Effect of growth regulator paclobutrazol on size fitting of basil as a potted plant

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