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Projeto de investigação
Delineamento e Implementação do Itinerário Técnico de Biofortificação em Cálcio nos tubérculos de Solanum tuberosum L. das variedades Agria, Picasso e Rossi
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Effect of calcium on quality parameters in three varieties of tubers of Solanum tuberosum L. at harvest and after four and eight months of cold storage conservation
Publication . Coelho, Ana Rita F.; Lidon, Fernando Cebola; Daccak, Diana; Luís, Inês Carmo; Marques, Ana Coelho; Pessoa, Cláudia Campos; Silva, Maria Manuela; Simões, Manuela; Legoinha, Paulo; Ramalho, José Cochicho; Pais, Isabel P.; Semedo, José Manuel Ferreira Nobre; Scotti-Campos, Paula; Gonçalves, Elsa M.; Alvarenga, Nuno; Gomes, Sandra Fernandes; Reboredo, Fernando Henrique; DCT - Departamento de Ciências da Terra; GeoBioTec - Geobiociências, Geoengenharias e Geotecnologias; United Arab Emirates University
Potato (Solanum tuberosum L) is one of the most important food crops worldwide, being a carbohydrate-rich food and presenting a good source of vitamins and minerals. Moreover, the mineral enrichment of potatoes through foliar application has been implemented over the years, namely in calcium (Ca). As such, this study aimed to assess the Ca effect on some quality parameters in three varieties of tubers of Solanum tuberosum L. plants produced in Portugal (Agria, Picasso, and Rossi) and submitted to Ca biofortification process carried out with two types of Ca (CaCl2 and Ca-EDTA) and two different concentrations (12 and 24 kg.ha-1), at harvest and after four and eight months under cold storage con-servation. The Ca content increased with the biofortification treatments in the three varieties relative to control tubers and different correlations were observed between the mineral elements analyzed (Ca, P, K, Fe, Zn, and Mg). Only Agria (the control and treatment with 24 kg.ha-1 of Ca-EDTA) was found suitable for industrial processing in the three periods analyzed (harvest, 4M and 8M) and overall, both in raw and cooked tubers, there were differences between each variety considering the work strength, adhesiveness and CIELAB parameters (L, a*, and b*).
Mineral Monitorization in Different Tissues of Solanum tuberosum L. during Calcium Biofortification Process
Publication . Coelho, Ana Rita F.; Lidon, Fernando Cebola; Pessoa, Cláudia Campos; Daccak, Diana; Luís, Inês Carmo; Marques, Ana Coelho; Ramalho, José Cochicho; Semedo, José Manuel N.; Silva, Maria Manuela; Pais, Isabel P.; Brito, Maria Graça; Kullberg, José Carlos; Legoinha, Paulo; Simões, Maria; Scotti-Campos, Paula; Pessoa, Maria Fernanda; Reboredo, Fernando Henrique; DCT - Departamento de Ciências da Terra; GeoBioTec - Geobiociências, Geoengenharias e Geotecnologias; MDPI - Multidisciplinary Digital Publishing Institute
Calcium is one of the 16 essential elements for plants, being required as Ca2+ and being involved in several fundamental processes (namely, in the stability and integrity of the cell wall, the development of plant tissue, cell division, and in stress responses). Moreover, Ca plays an important role in potato production. In this context, this study aimed to monitor the culture development (in situ and using an unmanned aerial vehicle (UAV)) and the mineral content of four essential elements (Ca, P, K, and S) in different organs of Solanum tuberosum L. (roots, stems, leaves, and tubers) during a calcium biofortification process, carried out with two types of solutions (CaCl2 and Ca-EDTA) with two concentrations (12 and 24 kg∙ha−1). The calcium content generally increased in the S. tuberosum L. organs of both varieties and showed, after the last foliar application, an increase in Ca content that varied between 5.7–95.6% and 20.7–33%, for the Picasso and Agria varieties, respectively. The patterns of accumulation in both varieties during the biofortification process were different between the variety and mineral element. Regarding the quality analysis carried out during the development of the tubers, only the Agria variety was suitable for industrial processing after the last foliar application.
Foliar Spraying of Solanum tuberosum L. with CaCl2 and Ca(NO3)2
Publication . Coelho, Ana Rita F.; Ramalho, José Cochicho; Lidon, Fernando Cebola; Marques, Ana Coelho; Daccak, Diana; Pessoa, Cláudia Campos; Luís, Inês Carmo; Guerra, Mauro; Leitão, Roberta G.; Semedo, José Manuel N.; Silva, Maria Manuela; Pais, Isabel P.; Leal, Nuno; Galhano, Carlos; Rodrigues, Ana Paula; Legoinha, Paulo; Silva, Maria José; Simões, Maria M.; Campos, Paula Scotti; Pessoa, Maria Fernanda; Reboredo, Fernando Henrique; DCT - Departamento de Ciências da Terra; GeoBioTec - Geobiociências, Geoengenharias e Geotecnologias; LIBPhys-UNL; DF – Departamento de Física; MDPI - Multidisciplinary Digital Publishing Institute
Calcium is essential for plants, yet as its mobility is limited, the understanding of the rate of Ca2+ accumulation and deposition in tissues of tubers, as well as the interactions with other critical nutrients prompted this study. To assess the interactions and differential accumulation of micro and macronutrients in the tissues of tubers, Solanum tuberosum L. varieties Agria and Rossi were cultivated and, after the beginning of tuberization, four foliar sprayings (at 8–10 day intervals) with CaCl2 (3 and 6 kg ha−1) or Ca(NO3)2 (2 and 4 kg ha−1) solutions were performed. It was found that both fertilizers increased Ca accumulation in tubers (mostly in the parenchyma tissues located in the center of the equatorial region). The functioning of the photosynthetic apparatus was not affected until the 3rd application but was somewhat affected when approaching the end of the crop cycle (after the 4th application), although the lower dose of CaCl2 seemed to improve the photochemical use of energy, particularly when compared with the greater dose of Ca(NO3)2. Still, none of these impacts modified tuber height and diameter. Following the increased accumulation of Ca, in the tubers of both varieties, the mean contents of P, K, Na, Fe, and Zn revealed different accumulation patterns. Moreover, accumulation of K, Fe, Mn, and Zn prevailed in the epidermis, displaying a contrasting pattern relative to Ca. Therefore, Ca accumulation revealed a heterogeneous trend in the different regions analyzed, and Ca enrichment of tubers altered the accumulation of other nutrients.
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Entidade financiadora
Fundação para a Ciência e a Tecnologia
Programa de financiamento
OE
Número da atribuição
UI/BD/150806/2020