Caracterização de Genótipos de aceroleira por variáveis agronômicas e de pós-colheita em diferentes estações climáticas.

• Ano de defesa: 2012
• Autor(a) principal: Bandeira, Alêssa Milena Paixão
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Palavras-chave em Português: Fitotecnia; Acerola; Melhoramento genético; Pós-colheita; Interação genótipo-ambiente
• Link de acesso: http://www.repositorio.ufc.br/handle/riufc/8364

Although several studies have developed the culture of acerola, there is still a large number of genotypes to be characterized in many ways, mainly genetic. Additionally, from genetic factors, the composition of acerola fruit can be affected depending on environmental conditions during development (season dry/wet). Giver the demand for new clones to postharvest developed in the years 1996 to 2007, a breeding program of acerola, launching in 2003, four clones recommended for the state of Ceará: BRS 235 (Apodi), BRS 236 (Cereja), BRS 237 (Roxinha) and BRS 238 (Frutacor), leading through the selection of garden seeds. The objective of this study was to characterize the genotypes of acerola garden seed through agronomic variables and post-harvest assessment of the existence of genetic diversity of this material. The experiment was installed in the field of experimental Pacajus (CE) under completely randomized design, 36 genotypes were evaluated for agronomc traits (morphology, phenology, and producyion) and 25 genotypes for post-harvest variables (weight, firmness, soluble solids, acidity, ratio ss/ta, pH of the pulp, vitamin C, anthocyanins, flavonoids, antioxidant activity and polyphenols) with three repetitions and the season dry of 2009 and wet and dry of 2010. Descriptive analysis was perfomed for agronomic traits in which it was found that the genotypes have height and diameter suitable for commercial plantation. Peaks were observed flowering in april, october and December and five fruiting peaks. As for productivity, the highlights were the clones 9, 14, 28, 37 and 38. We performed univariate and joint where we observed in variables during the post-harvest season with respect to weight, soluble solids, titratable acidity, vitamin C, anthocyanins, polyphenols and antioxidant activity, however, changes in texture, pH and flavonoids were significant. By multivariate analysis showed the existence of diversity among materials, especially clones 13 and 37. We used the selection index of Mulamba and Mock choice of materials to that presented a number of favorable attributes as the characteristics of post-harvest which highlights the clones 3, 13, 14, 27 and 38.