Izvorni znanstveni članak
https://doi.org/10.5513/JCEA01/17.4.1802
The effect of growth conditions on flavonols and anthocyanins accumulation in green and red lettuce
Klaudia BRÜCKOVÁ
; Department of Plant Physiology, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76Nitra, Slovak Republic
Oksana SYTAR
; Research Centre AgroBioTech, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76 Nitra,Slovak Republic
Marek ŽIVČÁK
; Department of Plant Physiology, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76Nitra, Slovak Republic
Marián BRESTIČ
; Department of Plant Physiology, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76Nitra, Slovak Republic
Aleš LEBEDA
; Department of Botany, Palacký University in Olomouc, Šlechtitelů 27, 783 71 Olomouc, CzechRepublic
Sažetak
The aim of the study was to investigate the effect of different growth conditions on anthocyanins and flavonols accumulation in leaves of green and red loose leaf lettuce (Lactuca sativa var. crispa). Lettuce plants were grown in three types of conditions, in greenhouse (I. variant), behind clear glass in field (II. variant) and in open field conditions (III. variant). Estimation of anthocyanins and flavonols content was done by non-destructive measurements with optical fluorescence sensor Multiplex® 3 (Force-A, France). It was estimated that green lettuce varieties had a greater flavonols content compared to red lettuce varieties in all experimental variants. The highest level of flavonols was detected in leaves of green variety Zoltán (1.218 RU) and in red lettuce had the highest amount of flavonols in variety Carmesi (1.095 RU). At the same time red lettuce varieties were characterized by higher anthocyanins content. Parameter anthocyanin index is correlated with visible red coloration of leaves. The highest content of anthocyanins was detected in variety Oakly (0.867 RU). Under the open field conditions was found statistically significant higher (P < 0.05) flavonols and anthocyanins level in both green and red lettuce leaves compared to greenhouse conditions. It may be connected with intensification of flavonoids biosynthesis and accumulation which normally stimulated by sun irradiation, especially UV-B radiation.
Ključne riječi
anthocyanins; flavonols; growth conditions; lettuce; UV radiation
Hrčak ID:
170842
URI
Datum izdavanja:
16.12.2016.
Posjeta: 1.388 *