Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/33732
Title: The use of the nonlinear models in the growth of pears of ‘Shinseiki’ cultivar
Other Titles: O uso de modelos não lineares na descrição do crescimento de frutos de pereira cultivar ‘Shinseiki’
Keywords: Biometric measurements
Asian pear - Growth
Model Gompertz
Logistic model
Medições biométricas
Pera asiática - Crescimento
Modelo Gompertz
Modelo logístico
Issue Date: 2018
Publisher: Universidade Federal de Santa Maria
Citation: RIBEIRO, T. D. et al. The use of the nonlinear models in the growth of pears of ‘Shinseiki’ cultivar. Ciência Rural, Santa Maria, v. 48, n. 1, p. 1-7, 2018.
Abstract: The goal of this study was to elucidate the growth and development of the Asian pear fruit, on the grounds of length, diameter and fresh weight determined over time, using the non-linear Gompertz and Logistic models. The specifications of the models were assessed utilizing the R statistical software, via the least squares method and iterative Gauss-Newton process (DRAPER & SMITH, 2014). The residual standard deviation, adjusted coefficient of determination and the Akaike information criterion were used to compare the models. The residual correlations, observed in the data for length and diameter, were modeled using the second-order regression process to render the residuals independent. The logistic model was highly suitable in demonstrating the data, revealing the Asian pear fruit growth to be sigmoid in shape, showing remarkable development for three variables. It showed an average of up to 125 days for length and diameter and 140 days for fresh fruit weight, with values of 72mm length, 80mm diameter and 224g heavy fat.
URI: http://repositorio.ufla.br/jspui/handle/1/33732
Appears in Collections:DES - Artigos publicados em periódicos

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