Abstract
An open field experiment was carried out two years, in order to study the simultaneous effect of water supply and examined varieties on the yield parameters (marketable yield, °Brix and °Brix yield) and main antioxidant components (carotenoids, mainly lycopene, phenolic compounds and tocopherols) in two different type of processing tomatoes. It was conducted in the Experimental Farms of the Institute of Horticulture at Szent István University, Gödöllo, Hungary. ‘Brixsol’ F1 (normal average fruit weight) and ‘Strombolino’ F1 (cherry type) varieties were used. Climatic conditions were significantly different in the two seasons. Increasing the water supply increased fruit yield but reduced antioxidants of individual fruits, by inducing more and larger fruits, and by its dilution effects. We have measured significantly higher carotenoids and polyphenols content byprocessing cherry type hybrid ‘Strombolino’ F1. In general, we can state that irrigation decreased (most cases significantly) carotenoids, polyphenol and tocopherol concentrations in tomato fruits.
Highlights
Phytonutrients are certain natural components of plants
In this study we evaluated total carotenoid, polyphenol and tocopherol contents and their composition depending on tested cultivars and water supplement in 2010 and 2011
During the two-year experiment, we found that the total carotenoid concentration of the tomato fruits ranged from
Summary
Phytonutrients ( referred to as phytochemicals) are certain natural components of plants. Vegetables (tomato, sweet pepper, eggplant, broccoli, carrot, onion, etc.) are rich sources of phytonutrients. The importance of tomato cultivation has been growing rapidly in the last decades in the world. Levels of plant metabolites are strongly affected by genetic and environmental factors as well as transportation and storage conditions (Hanson et al, 2004). The growth factors such as light, temperature, humidity, type of soil, application of fertilizers, damage caused by microorganisms and insects, stress induced by UV radiation, heavy metals, and pesticides all alter metabolite composition of plants (Orcutt and Nilsen, 2000; Helyes and Lugasi, 2006; Helyes et al, 2006; Pék et al, 2010)
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