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Colloquium Agrariae
Article . 2019 . Peer-reviewed
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Colloquium Agrariae
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Colloquium Agrariae
Article . 2019
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Qualidade e suscetibilidade de pêssegos e nectarinas aos danos causados pelo frio

Authors: Keli Cristina Fabiane; Kamila Cristina Fabiane; Américo Wagner Júnior; Marcelo Dotto; Jésus Val; Maria Angeles Moreno Sanchez;

Qualidade e suscetibilidade de pêssegos e nectarinas aos danos causados pelo frio

Abstract

[PO] Pêssegos e nectarinas são susceptíveis ao armazenamento refrigerado perdendo qualidade, assim a utilização de caracteres agronômicos correlacionados é importante em programas de melhoramento genético que visam frutos de qualidade e maior oferta da fruta no mercado. Este trabalho teve como objetivo realizar estudo das possíveis correlações entre os parâmetros de qualidade e de suscetibilidade aos danos por frio de pêssegos e nectarinas. O estudo foi conduzido na EEAD-CSIC, Zaragoza - Espanha, durante o ciclo produtivo 2013/2014. Um total de 40 acessos de pessegueiro e nectarineira foram avaliados quanto às características de qualidade [firmeza de polpa (FP), teor de sólidos solúveis totais (SST), acidez titulável (AT), pH, índice de maturação (IM), coloração do mesocarpo (CM)] e susceptibilidade aos danos por frio após armazenamento em duas temperaturas (0 e 5 ºC) e em dois períodos (14 e 28 dias). Dois dias após retirados das baixas temperaturas, foram observados diferentes sintomas de frio, como presença de polpa farinhenta (PF), granulosa (PG), coriácea (PC), alterações de coloração do mesocarpo, escurecimento (EI), avermelhamento interno (AI) e ausência de sabor (AS). Os dados foram submetidos ao estudo do coeficiente de correlação de Pearson entre os parâmetros de qualidade inicial e os frutos armazenados após duas e quatro semanas em 0 e 5º C. As variáveis IM, SST, FP e AT apresentaram correlações significativas entre si e, com PG e EI, indicando que frutos com maior amadurecimento tendem a desenvolver tais sintomas de danos. Os distúrbios EI, PF, PG e AS foram correlacionados significativamente, corroborando que esses sintomas são os principais distúrbios causados pelo armazenamento refrigerado. As variáveis de CM correlacionaram-se significativamente com EI e AI, e outros sintomas correlatos a estes, confirmando as alterações de cor.

[EN] Peaches and nectarines are susceptible cold storage already it lost quality. Then, the use of related agronomic traits is important in breeding programs aimed to obtain fruit quality and higher fruit supply in the market. The aim of this work was to evaluate the correlations between quality and susceptibility to chilling injury of peaches and nectarines. The study was carried out in EEAD-CSIC, Zaragoza - Spain, during 2013/2014 cycle. A total of 40 peaches and nectarines genotypes from germplasm collection were evaluated. The quality characteristics as flesh firmness, total soluble solids, titratable acidity, pH, rippining index and flesh color parameters and the susceptibility chilling injury after storage in two temperatures (0 e 5 °C) and two times period (14 e 28 days) were evaluated. After two days that the fruits were removal these low temperatures, the presence of symptoms, such as wooliness through mealiness, flesh grainy, leatheriness and flesh color changes, through browning, bleeding and off flavor were evaluated. The data were submitted to study the Pearson’s correlation coefficient between the initial fruit quality variables and the fruits stored after two and four weeks at 0 and 5 °C. The quality parameters as rippining index, soluble solids, firmness and titratable acidity presented correlation among them. These, also it had correlation with woolines and bowning, what it indicated that fruits with more ripening can have the symptoms more easily. The browning, mealiness, flesh grainy and off flavor variables were correlationed with the time period and temperatures, what it confirms that these symptoms are the main disorders caused by cold storage. The flesh color variables presented significant correlations with browning and bleeding, and other symptoms related to, confirming color changes.

18 Pags.- 5 Tabls. A Colloquium Agrariae é uma publicação com periodicidade bimestral em versão eletrônica (online ISSN: 1809-8215) completa, com livre acesso, disponível na página da UNOESTE (http://revistas.unoeste.br/revistas/ojs/index.php/ca/index), onde são realizadas também as submissões de artigos.

Peer reviewed

Keywords

prunus persica l., armazenamento refrigerado, S, melhoramento genético, Agriculture (General), Agriculture, Breeding, S1-972, Cold storage, Prunus persica L., Armazenamento refrigerado

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This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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