Caracterização físico-química de frutos de maracujazeiro-amarelo submetidos à iluminação artificial, irrigação e sombreamento
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Data
2008-09-01
Autores
Cavichioli, José Carlos
Ruggiero, Carlos [UNESP]
Volpe, Clovis Alberto [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Sociedade Brasileira de Fruticultura
Resumo
O presente trabalho objetivou avaliar alguns parâmetros físicoquímicos de frutos de maracujazeiro-amarelo (Passiflora edulis Sims f. flavicarpa Deg) submetidos a diferentes sistemas de produção. Avaliaram-se o peso, o comprimento, o diâmetro, o teor de sólidos solúveis (SS) e a acidez titulável (AT) dos frutos, a relação SS/AT, o peso e o rendimento da polpa, a espessura da casca e o rendimento de suco. Compararam-se quatro sistemas de produção (iluminação artificial/irrigação/sombreamento, iluminação artificial/irrigação, iluminação artificial/sombreamento, iluminação artificial) e um tratamento-testemunha, em condições naturais. Os tratamentos foram submetidos a três diferentes épocas de iluminação (12 de abril, 27 de abril e 12 de maio). O experimento foi conduzido na área da Escola Técnica Agrícola de Adamantina - SP, na região da Alta Paulista, no período de abril a dezembro de 1997. Observou-se que, no período de junho a novembro, os diferentes sistemas de produção e as épocas de iluminação não alteraram o peso, o comprimento e o diâmetro médio dos frutos de maracujazeiro. A iluminação artificial, a irrigação e o sombreamento não influenciaram no teor de sólidos solúveis e na acidez dos frutos. Os frutos colhidos em agosto apresentaram teores de brix e de acidez maiores que os colhidos em dezembro. No mês de dezembro, no ambiente iluminado, irrigado e sombreado, verificou-se aumento do peso médio dos frutos, do peso da polpa e da espessura da casca, apesar de apresentarem menor produção. em condições naturais, observou-se menor peso de frutos e de polpa, mas aumento no rendimento da polpa e do suco. O sombreamento artificial, na ausência de irrigação, promoveu a redução no peso e no rendimento de polpa e de suco.
The aim of this work was to evaluate some physical and chemical characteristics of the yellow passion fruit (Passiflora edulis Sims f. flavicarpa Deg.) submitted to artificial light, irrigation and shade. It was evaluated the mass, length, diameter, soluble solids and the acidity of the fruits, the soluble solids/acid ratio, the weight and the percentage of the pulp, thickness of the peel and the juice yield. Four systems of production were compared: artificial light/irrigation/shade; artificial light/irrigation; artificial light/shade, artificial light and a natural condition system. The treatments were submitted to artificial light in three different seasons: April 12th, April 27th and May 12th . The experiment was carried out at Escola Técnica Agrícola de Adamantina, SP, Brazil, from April to December 1997. It was observed that in the period from June to November, the different systems of production did not modify the average weight, length and diameter of the fruits of the yellow passion fruit. The artificial light, the irrigation and the shade did not affect the soluble solids content and the acidity of the fruits. The fruits produced in August presented soluble solids and acidity higher than the fruits produced in December. In December, in the illuminated, irrigated and shadowed environment, it was observed an increase in the average weight of the fruits, in the weight of the pulp and thickness of the peel, although there was a lower production. The absence of light, irrigation and shade decreased the weight of fruits and pulp, but increased the juice and pulp yield. The shade, in the irrigation absence decreased the weight and the juice and pulp yield.
The aim of this work was to evaluate some physical and chemical characteristics of the yellow passion fruit (Passiflora edulis Sims f. flavicarpa Deg.) submitted to artificial light, irrigation and shade. It was evaluated the mass, length, diameter, soluble solids and the acidity of the fruits, the soluble solids/acid ratio, the weight and the percentage of the pulp, thickness of the peel and the juice yield. Four systems of production were compared: artificial light/irrigation/shade; artificial light/irrigation; artificial light/shade, artificial light and a natural condition system. The treatments were submitted to artificial light in three different seasons: April 12th, April 27th and May 12th . The experiment was carried out at Escola Técnica Agrícola de Adamantina, SP, Brazil, from April to December 1997. It was observed that in the period from June to November, the different systems of production did not modify the average weight, length and diameter of the fruits of the yellow passion fruit. The artificial light, the irrigation and the shade did not affect the soluble solids content and the acidity of the fruits. The fruits produced in August presented soluble solids and acidity higher than the fruits produced in December. In December, in the illuminated, irrigated and shadowed environment, it was observed an increase in the average weight of the fruits, in the weight of the pulp and thickness of the peel, although there was a lower production. The absence of light, irrigation and shade decreased the weight of fruits and pulp, but increased the juice and pulp yield. The shade, in the irrigation absence decreased the weight and the juice and pulp yield.
Descrição
Palavras-chave
yellow passion fruit, photoperiod, chemical properties, physical properties, Fruit quality, maracujá-amarelo, Fotoperíodo, propriedades físicas, propriedades químicas, Qualidade dos frutos
Como citar
Revista Brasileira de Fruticultura. Sociedade Brasileira de Fruticultura, v. 30, n. 3, p. 649-656, 2008.