Influência das precipitações pluviométricas em atributos físico-químicos de frutos da goiabeira 'Paluma' em diferentes estádios de maturação

Souza, Manoel Euzébio de; Silva, Andréa Carvalho da; Souza, Adilson Pacheco de; Tanaka, Adriana Aki; Leonel, Sarita

doi:10.1590/s0100-29452010005000060

Cited by 8 publications

(8 citation statements)

References 13 publications

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“…There was no significant difference in the soluble solid content of the fruit. The values obtained were higher than those from the same cultivar that were found by Souza et al (2010) in São Manuel, SP, Cavalini et al (2015) in Vista Alegre do Alto, SP, or by Brackmann et al (2012) in Santa Maria, RS (10.1, 8.6 and 7.7 °Brix, respectively). The titratable acidity after pruning on September 11 yielded the highest values (0.54 g 100 -1 citric acid), and those pruned in August 27 had the lowest titratable acidity (0.31 g 100 -1 citric acid).…”

Section: Daa Longitudinal Fruit Diameter (Mm) Transverse Fruit Diametcontrasting

confidence: 63%

Phenology, yield and fruit quality of 'Paluma' guava tree at different pruning times

et al. 2016

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Pruning guava trees at different times is an important management tool that allows year-long staggering of fruit production. In this context, this study aimed to evaluate the phenological characteristics, yield and fruit quality of the 'Paluma' guava tree at different pruning times in Botucatu, SP. The study used a completely randomized design with four treatments, four replicates and a useful experimental plot plant. The treatments consisted of four different pruning times, August 27, September 11, September 26 and October 11. The following phenological phases were evaluated: branch establishment, flowering, early fruiting, fruit ripening and harvesting. It was determined the number of flower buds, fixed fruits and fixation index fruit were determined. The fruit growth curve was obtained by measuring the transverse and longitudinal diameter. At the time of harvest, the number of fruits per plant, yield and productivity were measured. In the harvested fruits, the fresh mass, the transverse and longitudinal diameter, the flesh and core thickness, the flesh and core mass, soluble solids, titratable acidity and pH were determined. The 'Paluma' guava trees pruned in August showed higher phenological stage durations than the other pruning times; however, those pruned in early September showed higher fixation index fruit, fruit yield and better physical characteristics. The guava trees pruned in August showed lower titratable acidity values and higher soluble solids/titratable acidity ratio.Index terms: Psidium guajava L.; fruit growth; fruit set; fixation index. RESUMOA poda da goiabeira em diferentes épocas é uma importante prática de manejo que permite a produção escalonada dos frutos ao longo do ano. Nesse contexto, o presente trabalho teve como objetivo avaliar as características fenológicas, produtivas e de qualidade de frutos da goiabeira 'Paluma' em função de diferentes épocas de poda em Botucatu, SP. Foi utilizado o delineamento inteiramente casualizado, com quatro tratamentos, quatro repetições e uma planta útil por parcela experimental. Os tratamentos consistiram em quatro diferentes épocas de poda de goiabeiras 'Paluma', sendo elas: 27 de agosto, 11 de setembro, 26 de setembro e 11 de outubro. Foram avaliadas as seguintes fases fenológicas: estabelecimento de ramos, florescimento, início da frutificação, maturação dos frutos e colheita. Foi determinado o número de botões florais, número de frutos fixados e o índice de pegamento de frutos. A curva de crescimento de frutos foi obtida através da medição semanal do diâmetro transversal e longitudinal dos frutos. Na ocasião da colheita foi avaliado o número de frutos por planta, a produção e a produtividade. Nos frutos colhidos determinou-se a massa fresca; diâmetro transversal, longitudinal e sua relação; espessura do mesocarpo -polpa, e do endocarpo -miolo; massa de polpa e miolo e suas relações; teor de sólidos solúveis, acidez titulável e sua relação e pH. As goiabeiras 'Paluma' podadas no mês de agosto apresentaram maior duração das fases fenológic...

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Section: Daa Longitudinal Fruit Diameter (Mm) Transverse Fruit Diametcontrasting

confidence: 63%

Phenology, yield and fruit quality of 'Paluma' guava tree at different pruning times

et al. 2016

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“…cm (698,3 cmol c dm -3 ) e 20-40 cm (273,8 cmol c dm -3 ), conforme observado na Tabela 1. (Lima et al, 2008;Souza et al, 2010), influenciando com isto na firmeza da polpa. (SERRANO et al, 2007).…”

Section: Plantasunclassified

“…(SERRANO et al, 2007). A redução do teor de sólidos solúveis, por exemplo, pode ocorrer pelo excesso de água na época do enchimento do fruto, enquanto a concentração de açúcares pode ser favorecida pela escassez de água (Souza et al, 2010).…”

Section: Plantasunclassified

Adubação potássica na produção e qualidade pós-colheita de goiaba ‘Paluma’ no semiárido potiguar

Alencar¹,

Leite²,

Mendonça³

et al. 2016

Com. Sci.

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The aim of this study was to evaluate the effect of potassium fertilization on yield and final quality of guava fruit variety ‘Paluma’, grown at the Irrigated District of Baixo Açu-RN, Brazil. The experimental was carried out in a completelyrandomized blocks design in split plot with five treatments (0, 0.5, 1.0, 1.5 and 2.0 kg K2O plant-1) with four repetitions. The subplots were composed of two harvest seasons and the following characteristics were evaluated: number of fruits, commercial production, total production, commercial yield, average weight of commercial fruits and average weight of total fruit. For fruit quality the following characteristics were evaluated: vitamin C, soluble solids content, firmness, titratable acidity, flesh pH, fruit length and. With an increasie of K2O dose, a linear increase in the number of fruits was observed and ahigher yield was obtained when a dose of 0.370 kg K2O per plant was applied and a higher fruit firmness was obtained with a dose of 1.2 kg K2O per plant.

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“…4). This can be related to the decrease in organic acids during maturation and ripening of fruits, verified by [38] in studies with "Paluma" guavas. According to [39], satisfactorily pH indexes should be between 3.6 and 4.10.…”

Section: Treatmentsmentioning

confidence: 67%

Conservation of "Paluma" guavas coated with cassava starch and pectin

Quirino

Costa

Neto

et al. 2018

DYNA

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This study was to evaluate the post-harvest conservation of "Paluma" guavas coated with cassava starch and pectin. The selected and disinfected fruit samples were coated with cassava starch or pectin at concentrations of 0 (control), 2, 4 and 6%. Then, fruits were stored at room temperature (25 ± 1.0°C) for 12 days. Every three days, evaluations of mass loss, length, diameter, color of peel and pulp, pulp firmness, total soluble solids, pH and vitamin C content were held. The experiment was completely randomized in a 4 x 5 factorial design with four concentrations of the solutions and five storage periods with three replications. The results showed that cassava starch and pectinbased coatings can be an alternative for maintaining the post-harvest quality of "Paluma" guavas. Concentrations of 4 and 6% of both types of coating provided good results regarding the retention of some attributes. The cassava starch kept the fruits brighter compared to fruits coated with pectin.Keywords: edible coatings; fruits properties; Psidium guajava L.; ripening; storage.Conservación de las guayabas "Paluma" recubiertas con almidón de yuca y pectina Resumen Este estudio evaluó la conservación post-cosecha de guayabas "Paluma" recubiertas con almidón de yuca y pectina. Las muestras de frutos seleccionadas y desinfectadas, fueron recubiertas con almidón de yuca o pectina a concentraciones de 0 (control), 2, 4 y 6%. Los frutos se almacenaron a 25 ± 1,0 ° C durante 12 días. Cada tres días se realizaron evaluaciones de pérdida de masa, longitud, diámetro, color de piel y pulpa, firmeza de pulpa, sólidos solubles totales, pH y contenido de vitamina C. El experimento fue completamente al azar en un diseño factorial 4 x 5 con cuatro concentraciones de las soluciones y cinco periodos de almacenamiento con tres repeticiones. Los resultados mostraron que los revestimientos a base de almidón de yuca y pectina pueden ser una alternativa para mantener la calidad post-cosecha de las guayabas "Paluma". Las concentraciones de 4 y 6% de ambos tipos de revestimiento proporcionaron buenos resultados con respecto a la retención de algunos atributos. El almidón de yuca mantuvo las frutas más brillantes en comparación con las frutas cubiertas con pectina.Palabras clave: recubrimientos comestibles; propiedades de las frutas; Psidium guajava L.; madurez; almacenamiento.

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Influência das precipitações pluviométricas em atributos físico-químicos de frutos da goiabeira 'Paluma' em diferentes estádios de maturação

Cited by 8 publications

References 13 publications

Phenology, yield and fruit quality of 'Paluma' guava tree at different pruning times

Phenology, yield and fruit quality of 'Paluma' guava tree at different pruning times

Adubação potássica na produção e qualidade pós-colheita de goiaba ‘Paluma’ no semiárido potiguar

Conservation of "Paluma" guavas coated with cassava starch and pectin

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