Tomato post-harvest durability and physicochemical quality depending on silicon sources and doses

ABSTRACT This study aimed to investigate the effect of silicon (Si) sources and doses on the physicochemical quality as well as post-harvest conservation of tomato fruits. Treatments were arranged in a 3 x 5 factorial scheme corresponding to sources {calcium silicate, potassium silicate and sodium s...

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Veröffentlicht in:Horticultura brasileira 2016-09, Vol.34 (3), p.361-366
Hauptverfasser: Marodin, Josué C, Resende, Juliano TV, Morales, Rafael GF, Faria, Marcos V, Trevisam, Anderson R, Figueiredo, Alex ST, Dias, Diego M
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Sprache:eng
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Zusammenfassung:ABSTRACT This study aimed to investigate the effect of silicon (Si) sources and doses on the physicochemical quality as well as post-harvest conservation of tomato fruits. Treatments were arranged in a 3 x 5 factorial scheme corresponding to sources {calcium silicate, potassium silicate and sodium silicate} and five doses of Si (equivalent to 0, 100, 200, 400 and 800 kg/ha SiO2). Randomized blocks were the experimental design, with four replications. Soluble solids, vitamin C, lycopene, titratable acidity, mature fruit firmness, initial firmness, firmness half-life, time until reaching firmness equivalent to 3.0 x 104 N/m2 and 2.0 x 104 N/m2 and Si content in fruits were evaluated. Soluble solids, vitamin C and lycopene of fruits increased with increasing doses of Si, except for the highest dose. Calcium and sodium silicate provided the highest lycopene concentration in fruits. An increase in initial firmness, number of days until reaching firmness half-life and firmness equivalent to 3.0 and 2.0 x 104 N/m2 were observed along with increasing doses of Si. Tomato fertilization with calcium silicate, potassium silicate and sodium silicate, used as sources of Si, increased the post-harvest conservation as well as the physicochemical quality of tomato. RESUMO O presente trabalho teve por objetivo avaliar o efeito de diferentes fontes e doses de silício (Si) sobre a qualidade físico-química e a conservação pós-colheita de frutos de tomateiro. Os tratamentos foram distribuídos em esquema fatorial 3 x 5, correspondendo às fontes de Si {silicato de cálcio, potássio e sódio} e cinco doses de Si (equivalentes a 0, 100, 200, 400 e 800 kg/ha de SiO2). O delineamento experimental foi em blocos casualizados, com quarto repetições. Foram realizadas as seguintes avaliações nos frutos: teor de sólidos solúveis, vitamina C, licopeno, acidez titulável, firmeza de fruto maduro, firmeza inicial, meia vida da firmeza, firmezas em 3,0 x 104 N/m2 e 2,0 x 104 N/m2 e concentração de Si nos frutos. As concentrações de sólidos solúveis, vitamina C e licopeno nos frutos aumentaram em resposta às doses crescentes de Si, contudo, reduziram na maior dose. A aplicação de silicato de cálcio e de sódio proporcionou aumento na concentração de licopeno do fruto. Houve um aumento na firmeza inicial, número de dias para alcançar a meia vida da firmeza, firmeza de 3,0 x 104 N/m2 e firmeza 2,0 x 104 N/m2 dos frutos em resposta ao aumento das doses de Si. Com base nesses resultados, pode-se conclu
ISSN:0102-0536
0102-0536
DOI:10.1590/S0102-05362016003009