Peliculização de sementes de tomate associada ao paclobutrazol

Melo, Aniela Pilar Campos de; Seleguini, Alexsander; Veloso, Valquíria da Rocha Santos

doi:10.1590/brag.2014.026

Cited by 7 publications

(5 citation statements)

References 36 publications

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“…Malagueta pepper plants grown in an environment with 18% of shading showed higher concentration of chlorophyll a, when they were subjected to foliar application with the different treatments studied in relation to the evidence, especially the use of PBZ + N which promoted the highest concentration of chlorophyll a compared to other treatments analyzed (Table 5). Results are in agreement with those obtained by Melo et al (2014), which reviewed the use of the growth retardant PBZ in the film-coating of tomato seeds (Solanum lycopersicum L.), verifying that independent from the concentration adopted, the use of PBZ increases the concentration of chlorophyll. Pepper grown in an environment with 35% of shading showed higher concentration of chlorophyll a compared to control, when they were subjected to foliar application of Gib.…”

Section: Photosynthetic Pigmentssupporting

confidence: 88%

Effects of foliar application of chemical agents and shading levels on growth and physiological aspects of "malagueta" pepper plants

et al. 2020

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Foliar application of chemical agents and cultivation in different levels of shading can modify pepper plants. The objective of this study was to evaluate the effect of the application of chemical agents in the growth, partition of photoassimilates and photosynthetic pigments of malagueta pepper in different growing environments. The treatments were arranged in a randomized design with a 2x5 factorial scheme under two cultivation environments [eucalyptus structures measuring 5.0 x 5.0 x 2.5 m (length x width x height), coated with type coverage screens (Sombrite®) with 18% and 35% shading], and five treatments with chemical agents [1 - C - without application; 2 - PBZ (50 mg L-1) + Nut. (1%); 3 - Gib. (50 mg L-1) + Nut. (1%); 4 - Amin. (50 mg L-1) + Ant. (50 mg L-1) and 5 - Gib. (50 mg L-1) + A (50 mg L-1) + Amin. (50 mg L-1) + Ant. (50 mg L-1)] in four replications. We evaluated the stem diameter, the plant height, number of leaves, leaf dimensions, leaf area, accumulation and dry matter partition and chlorophyll contents. The cultivation of pepper plants in environment with 18% of shading provides plants with a higher number of leaves and dry matter, as environment protects plants against climatic agents by controlling temperature, humidity and solar radiation. The application of the Paclobutrazol + Nitrogen promotes shoot growth and increases the green pigmentation in pepper plants.

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Section: Photosynthetic Pigmentssupporting

confidence: 88%

Effects of foliar application of chemical agents and shading levels on growth and physiological aspects of "malagueta" pepper plants

et al. 2020

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“…This might be related to a delay in the emergence of the shoots caused by the growth inhibitor. Melo et al (2014) noticed that tomato seeds treated with y = 7E-06x 2 -0.0024x + 1.8824 R² = 0.9638 1.65…”

Section: Resultsmentioning

confidence: 99%

“…However, its results depend on the applied concentrations, number, the moment of applications, and target (foliar or soil) (Almeida And Pereira, 1996;Koutoubras et al, 2014). Furthermore, there are just a few studies on the use of paclobutrazol in seed treatment (Melo et al, 2014(Melo et al, , 2015. Due to these facts, the utilization of this hormone in the sunflower crop still requires more studies.…”

Section: Introductionmentioning

confidence: 99%

Sunflower seed treatment with growth inhibitor: Crop development aspects and yield

Domingos¹,

Jorge²,

Polianna³

et al. 2016

Afr. J. Agric. Res.

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Sunflower is one of the most important oleaginous crops designated for edible oil production in the world. However, Brazilian growers still do not have enough knowledge, and technical expertise, for expanding the sunflower crop yield through the adoption of new technologies, like the utilization of plant growth regulators (paclobutrazol). The aim of this work was to evaluate the effects of different doses (0, 50, 100, 150 and 200 mL ha-1) of the growth regulator paclobutrazol on agronomic characteristics of sunflower crop in Uberlandia, Minas Gerais State, Brazil. Treating the seed with paclobutrazol decreased the size of the disk flowers and the plant height, while the number of days to complete the development cycle increased. The yield was not affected by the different doses. The use of paclobutrazol in seed treatment is an interesting tool to manage the development of the sunflower crop, as it affects desirable parameters which does not reduce seed yield.

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“…A germinação e velocidade de germinação das sementes intactas, com a presença do ácido giberélico se sobressaem em comparação com o paclobutrazol, concordando com resultados obtidos por Melo (2014) quando tratou sementes de tomates e observou redução na germinação utilizando solução de paclobutrazol.…”

Section: Discussionunclassified

AVALIAÇÃO DA DORMÊNCIA DE Urochloa humidicola CV. LLANERO SOB DIFERENTES DOSES DE ÁCIDO GIBERÉLICO E PACLOBUTRAZOL

Sorigotti¹,

Garcia²,

Custódio³

et al. 2016

COLLOQ AGRARIAE

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RESUMOO objetivo foi avaliar a germinação e dormência das sementes de U. humidicola cv. Llanero em diferentes concentrações de ácido giberélico e paclobutrazol, utilizando sementes intactas e sementes nuas (cariopses). Utilizou-se diferentes soluções para embebição do substrato. As soluções de ácido giberélico (GA 3 ) foram: 0 (água pura); álcool 5%; 0,50 mM L -1 ; 1,0 mM L -1 ; 2,0 mM L -1 e 4,0 mM L -1 e de paclobutrazol (PBZ): 0; 0,05 g L -1 ; 0,100 g L -1 e 0,200 g L -1 . Avaliou-se a germinação por protrusão de raiz primária, índice de velocidade de germinação e a porcentagem de dormência das sementes. Os dados foram analisados pelo teste F e o teste de Tukey para comparação de médias. O GA 3 favorece a germinação das sementes intactas, porém para a germinação do cariopse não há influência do ácido giberélico. O PBZ não inibe a germinação das sementes nuas. A germinação esta relacionada à outros fatores, além do balanço de giberelinas nas sementes. Palavras-chave: Germinação; Giberelina; Inibidor da giberelina; Triazol; Urochloa. EVALUATION DORMANCY Urochloa humidicola CV. LLANERO UNDER DIFFERENT ACID DOSES GIBBERELLIC AND PACLOBUTRAZOLThe objective was to evaluate the germination and dormancy of U. humidicola seeds cv. Llanero in different concentrations of gibberellic acid and paclobutrazol using intact seeds and naked seeds (caryopses). Different solutions are used for soaking the substrate. The solution of gibberellic acid (GA3) were: 0 (pure water) ; 5% alcohol; 0.50 mM L-1; 1.0 mM L-1; 2.0 mM L-1 and 4.0 mM L-1 and paclobutrazol (PBZ): 0; 0.05 g L-1 ; 0.100 g L-1 and 0.200 g L-1 . We evaluated the germination protrusion of primary root, germination speed index and the percentage of seed dormancy. Data were analyzed by F test and Tukey test to compare means. The GA3 favors the germination of intact seeds, but for the germination of caryopses there is no influence of gibberellic acid. The PBZ does not inhibit the germination of naked seeds. Germination is related to other factors and the balance of gibberellins in the seeds.

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Peliculização de sementes de tomate associada ao paclobutrazol

Cited by 7 publications

References 36 publications

Effects of foliar application of chemical agents and shading levels on growth and physiological aspects of "malagueta" pepper plants

Effects of foliar application of chemical agents and shading levels on growth and physiological aspects of "malagueta" pepper plants

Sunflower seed treatment with growth inhibitor: Crop development aspects and yield

AVALIAÇÃO DA DORMÊNCIA DE Urochloa humidicola CV. LLANERO SOB DIFERENTES DOSES DE ÁCIDO GIBERÉLICO E PACLOBUTRAZOL

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