Published in Scientific Papers. Series B, Horticulture, Vol. LXIII, Issue 1
Written by Gülsüm DOGANCAY, Hakan CETINKAYA
Secondary metabolites or their precursors are influenced by biotic and abiotic environmental factors in addition to the different plant genotypes or cultivars of the species, agricultural practices and post-harvest processes. The present study was designed to examine the variations of polyphenol contents of olive leaves according to the irrigation and nonirrigation during months of the year. Furthermore, two cultivars of olive trees were compared for their response to the conditions. Also, young and old trees of Kilis Yaglik were compared for their content. Along with the present study, total phenolic content and flavonoid content were higher in Kilis Yaglik and irrigated conditions but higher relative water content was observed in Gemlik. Furthermore, higher phenolic content and relative water content were determined in young trees of Kilis Yaglik whereas old trees exhibited higher flavonoid content. Considering the monthly changes of contents, higher phenolic content was found in months of spring whereas higher content of flavonoids was observed in months.
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