Abstract:ResumoO objetivo do trabalho consistiu em avaliar a qualidade físico-química de batatas de diferentes cultivares produzidas em casa de vegetação sob sistema orgânico. Os tubérculos foram oriundos do município de Guarapuava (PR), e cultivados em vasos de 1,5 L com substrato comercial à base de cascas processadas, vermiculita expandida, turfa processada e enriquecida. O delineamento experimental foi em blocos casualizados com três repetições e três tratamentos, representados pelas cultivares Ágata, Atlantic e BR… Show more
“…Considering that total soluble solids is another quality parameter, as Ca enriched tubers of the three genotypes, relatively to the control, displayed significant differences among treatments (Table 4), spraying to some extend affected negatively this parameter in Agria and Rossi. Nevertheless, it must be pointed out that all the potato genotypes showed higher values relative to other potato cultivars [55], such as Ágata (4.00), Atlantic (4.8) and BRS Clara (3.2). Higher values were also found when comparing Agria, Picasso and Rossi with Asterix (4.25) and Mondial (3.95) [56].…”
This study aimed to assess the efficiency of Ca enrichment in tubers of three genotypes of Solanum tuberosum L., through foliar spraying with CaCl2 and Ca(NO3)2 solutions. In this context, soil heterogeneity of three potato-growing fields, as well as the implications of Ca accumulation among tissues and some quality parameters were assessed. Three potato varieties (Agria, Picasso and Rossi) were grown in three production fields and during the life cycle, four pulverizations with calcium chloride (3 and 6 kg ha−1) or calcium nitrate (0.5, 2 and 4 kg ha−1) were applied. For screening the potential phytotoxicity, using Agria as a test system, the potential synthesis of photoassimilates was determined, and it was found that after the 3rd Ca application, leaf gas exchanges were moderately (net photosynthesis), to strongly (stomatal conductance) affected, although without impact on Ca accumulation in tubers. At harvest, the average Ca biofortification index varied between 5–40%, 40–35% and 4.3–13% in Agria, Picasso and Rossi, respectively. Moreover, the equatorial region of the tubers in general showed that Ca accumulation prevailed in the epidermis and, in some cases, in inner areas of the potato tubers. Biofortified tubers with Ca also showed some significant changes in total soluble solids and colorimetric parameters. It is concluded that Ca enrichment of potato tubers through foliar spraying complemented the xylem mass flow of Ca from roots, through phloem redistribution. Both fertilizers showed similar efficiency, but Rossi revealed a lower index of Ca accumulation, eventually due to different metabolic characteristics. Although affected by Ca enrichment, potato tubers maintained a high quality for industrial processing.
“…Considering that total soluble solids is another quality parameter, as Ca enriched tubers of the three genotypes, relatively to the control, displayed significant differences among treatments (Table 4), spraying to some extend affected negatively this parameter in Agria and Rossi. Nevertheless, it must be pointed out that all the potato genotypes showed higher values relative to other potato cultivars [55], such as Ágata (4.00), Atlantic (4.8) and BRS Clara (3.2). Higher values were also found when comparing Agria, Picasso and Rossi with Asterix (4.25) and Mondial (3.95) [56].…”
This study aimed to assess the efficiency of Ca enrichment in tubers of three genotypes of Solanum tuberosum L., through foliar spraying with CaCl2 and Ca(NO3)2 solutions. In this context, soil heterogeneity of three potato-growing fields, as well as the implications of Ca accumulation among tissues and some quality parameters were assessed. Three potato varieties (Agria, Picasso and Rossi) were grown in three production fields and during the life cycle, four pulverizations with calcium chloride (3 and 6 kg ha−1) or calcium nitrate (0.5, 2 and 4 kg ha−1) were applied. For screening the potential phytotoxicity, using Agria as a test system, the potential synthesis of photoassimilates was determined, and it was found that after the 3rd Ca application, leaf gas exchanges were moderately (net photosynthesis), to strongly (stomatal conductance) affected, although without impact on Ca accumulation in tubers. At harvest, the average Ca biofortification index varied between 5–40%, 40–35% and 4.3–13% in Agria, Picasso and Rossi, respectively. Moreover, the equatorial region of the tubers in general showed that Ca accumulation prevailed in the epidermis and, in some cases, in inner areas of the potato tubers. Biofortified tubers with Ca also showed some significant changes in total soluble solids and colorimetric parameters. It is concluded that Ca enrichment of potato tubers through foliar spraying complemented the xylem mass flow of Ca from roots, through phloem redistribution. Both fertilizers showed similar efficiency, but Rossi revealed a lower index of Ca accumulation, eventually due to different metabolic characteristics. Although affected by Ca enrichment, potato tubers maintained a high quality for industrial processing.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.