Abstract Changes in the population's eating habits have expanded the French fries market. However, the need for refrigerated storage to supply sprouts and maintain a constant supply to the industry has led to a reduced number of cultivars suitable for processing due to the accumulation of sugars and browning after frying. Because of this, the objective of this study was to evaluate the suitability of the Donata and BRS F132 cultivars for use in the pre-fried potato processing industry. The tubers were stored at 6 and 8 °C for up to 180 days and the analysis of sprouting, total soluble sugar (TSS), reducing sugar (RS), non-reducing sugar (NRS), post-frying color by scale visual color used by the industry and L* and b* parameters. The sprouting was higher at 8 °C and in the BRS F 132 cultivar. The sugar content was high in both cultivars, however, the color remained adequate. It is concluded that the Donata and BRS F132 cultivars are suitable for the potato processing industry, and Donata presented better quality parameters. Conditioning at 8 °C is recommended in both cultivars that maintained the quality for 180 days.

RESUMO As plantas do gênero Capsicum têm níveis variáveis de sensibilidade ao etileno. O conhecimento desta variabilidade permite o planejamento de metodologias de pós-produção de pimenteiras em vaso e pode ser usado em programas de melhoramento genético. O objetivo foi avaliar a sensibilidade ao etileno de três genótipos de pimenteiras ornamentais do Banco de Germoplasma da Universidade Federal de Viçosa. Após a exposição das pimenteiras a 10 μL L-1 de etileno por 48 horas, observou-se que as flores foram altamente sensíveis ao etileno exógeno em todos os genótipos com exceção da Pimenta colorida que foi moderadamente sensível. Com relação à abscisão de folhas, a Pimenta colorida e o Pimentão ornamental são classificados como altamente sensíveis à aplicação de etileno. Já os frutos responderam com o aparecimento precoce da coloração típica de quando maduros, com exceção da Pimenta laranja. Quando abscindiam, as maiores taxas foram observadas para os frutos verdes, seguidos pelos frutos verde-maduro e maduros.

ABSTRACT The genus Capsicum has varying levels of sensitivity to ethylene. Variability knowledge allows planning post-production methodologies of potted pepper plants and can be used in breeding programs. The objective of this study was to evaluate the ethylene sensitivity of three ornamental pepper genotypes of the germplasm bank of Universidade Federal de Viçosa. Pepper plants were exposed to 10 μL L-1 ethylene during 48 hours. The flowers were highly sensitive to exogenous ethylene in all genotypes except Pimenta colorida which was moderately sensitive. Regarding leaf abscission, Pimenta colorida and Pimentão ornamental are classified as highly sensitive to ethylene application. Already the fruits responded with the early appearance of the typical coloration when ripe, except for Pimenta laranja. When fruits fell, the highest rates were observed for green fruits, followed by ripe green and ripe fruits.

RESUMO Dentro da variabilidade genética no gênero Capsicum há plantas com grande potencial ornamental, mas com altura desconforme da exigida pelo mercado. A aplicação de paclobutrazol (PBZ), retardante de crescimento e inibidor das giberelinas, é uma alternativa para reduzir a altura das plantas. O objetivo foi avaliar o efeito de diferentes concentrações de PBZ (0, 25, 50 e 75 mg L-1) sobre oito genótipos de pimenteiras. Sete acessos [BGH 1032, BGH 1039, BGH 7073 (C. annuum), BGH 4285, BGH 4199, BGH 4355 e BGH 6371 (C. chinense)] pertencentes ao Banco de Germoplasma da UFV e um acesso [MG 302 (C. annuum)] da EPAMIG foram avaliados. No acesso BGH 6371, a aplicação de PBZ mostrou-se ineficaz em alterar a arquitetura das plantas. Nos acessos BGH 1032 e BGH 1039, a aplicação de PBZ na concentração de 25 mg L-1 resultou em plantas com melhores características ornamentais. Considerando o custo/benefício, a concentração indicada para os acessos BGH 4285, BGH 7073 e MG 302 é de 25 mg L-1 de PBZ. A aplicação de PBZ nos acessos BGH 4199 e BGH 4355, mesmo reduzindo a altura da planta, não melhorou suas características ornamentais, resultando em plantas sem padrão de copa.

ABSTRACT Within the genetic variability of the Capsicum genus there are plants with ornamental potential, but awry height required by the market. Paclobutrazol (PBZ), gibberellin retardant and growth inhibitor, is normally used as alternative to reduce plant height. The objective was to evaluate the PBZ (0, 25, 50 and 75 mg L-1) effect on plant height of eight pepper genotypes. Seven accessions [BGH 1032, BGH 1039, BGH 7073 (C. annuum), BGH 4285, BGH 4199, BGH 4355 and BGH 6371 (C. chinense)] of the germplasm bank from Universidade Federal de Viçosa and one access [MG 302 (C. annuum)] from the germplasm bank of the Empresa de Pesquisa Agropecuária de Minas Gerais were evaluated. The PBZ application was ineffective in altering plant architecture of BGH 6371. PBZ at 25 mg L-1 resulted in plants with better ornamental characteristics of the accesses BGH 1032 and BGH 1039. Considering the cost-benefit, the indicated dose for BGH 4285, BGH 7073 and MG 302 access is 25 mg L-1 PBZ. The PBZ application in BGH 4199 and BGH 4355 accesses, despite reducing plant height, did not improve the ornamental characteristics, resulting in plants without canopy pattern.

RESUMO O 1-MCP tem sido efetivamente utilizado como antagonista das ações deletérias do etileno em flores e plantas ornamentais. O objetivo foi avaliar a eficiência do 1-MCP (0,0; 0,5; 1,0 e 1,5 g m-3) na manutenção da qualidade pós-produção de pimenteiras ornamentais sensíveis ao etileno exógeno. Foram avaliadas duas variedades comerciais: Pimentão Ornamental e Pimenta Colorida, ambas Capsicum annuum. O pré-tratamento com 1-MCP, independente da concentração aplicada, foi eficaz em bloquear a ação do etileno reduzindo em 100% a abscisão de folhas, flores e frutos de ambos os genótipos. As plantas pré-tratadas com 1-MCP tiveram a vida de pós-produção aumentada em oito e nove dias para Pimenta Colorida e Pimentão Ornamental, respectivamente. A aplicação de 1-MCP na concentração de 1,0 g m-3 é eficiente em manter a qualidade ornamental e prolongar a vida de prateleira da Pimenta Colorida e Pimentão Ornamental.

ABSTRACT 1-MCP has been effectively used as an antagonist of ethylene deleterious actions in flowers and ornamental plants. The objective was to evaluate the efficiency of 1-MCP (0.0, 0.5, 1.0 and 1.5 g m-3) in maintaining post-production quality of exogenous ethylene sensitive ornamental pepper. Two commercial varieties were evaluated: Pimenta Colorida and Pimentão Ornamental, both Capsicum annuum. The pre-treatment with 1-MCP, regardless of the applied concentration, was effective in blocking the ethylene action reducing the leaves abscission, flowers and fruits of both genotypes by 100%. Plants pretreated with 1-MCP had postproduction life increased by eight and nine days for Pimenta Colorida and Pimentão Ornamental, respectively. The 1-MCP application at the concentration of 1.0 g m-3 is efficient in maintaining ornamental quality and prolonging the shelf life of Pimenta Colorida and Pimentão Ornamental.

Adjuvants play an important role in vaccine formulations by increasing their immunogenicity. In this study, the phenolic compound-rich J fraction (JFR) of a Brazilian green propolis methanolic extract stimulated cellular and humoral immune responses when co-administered with an inactivated vaccine against swine herpesvirus type 1 (SuHV-1). When compared to control vaccines that used aluminium hydroxide as an adjuvant, the use of 10 mg/dose of JFR significantly increased (p < 0.05) neutralizing antibody titres against SuHV-1, as well as the percentage of protected animals following SuHV-1 challenge (p < 0.01). Furthermore, addition of phenolic compounds potentiated the performance of the control vaccine, leading to increased cellular and humoral immune responses and enhanced protection of animals after SuHV-1 challenge (p < 0.05). Prenylated compounds such as Artepillin C that are found in large quantities in JFR are likely to be the substances that are responsible for the adjuvant activity.