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POLJOPRIVREDA, Vol.16 No.1 Lipanj 2010.
Izvorni znanstveni članak
STRAWBERRY (FRAGARIA X ANANASSA DUCH) LEAF ANTIOXIDATIVE RESPONSE TO BIOSTIMULATORS AND REDUCED FERTILIZATION WITH N AND K
Marija Špoljarević
; Faculty of Agriculture, J.J.Strossmayer University of Osijek, Osijek, Croatia
Ivna Štolfa
; Department of Biology, J.J. Strossmayer University of Osijek, Osijek, Croatia
Miroslav Lisjak
; Faculty of Agriculture, J.J.Strossmayer University of Osijek, Osijek, Croatia
Aleksandar Stanisavljević
; Faculty of Agriculture, J.J.Strossmayer University of Osijek, Osijek, Croatia
Tomislav Vinković
; Faculty of Agriculture, J.J.Strossmayer University of Osijek, Osijek, Croatia
Dejan Agić
; Faculty of Agriculture, J.J.Strossmayer University of Osijek, Osijek, Croatia
Nada Parađiković
; Faculty of Agriculture, J.J.Strossmayer University of Osijek, Osijek, Croatia
Tihana Teklić
; Faculty of Agriculture, J.J.Strossmayer University of Osijek, Osijek, Croatia
Meri Engler
; Faculty of Agriculture, J.J.Strossmayer University of Osijek, Osijek, Croatia
Katica Klešić
; Faculty of Agriculture, J.J.Strossmayer University of Osijek, Osijek, Croatia
Puni tekst: pdf (157 KB),
Engleski,
Str. 50 - 56
,
Sažetak
Strawberry cultivar Elsanta was grown in peat based substrate in a green house. Full dose and 50% reduced nitrogen and potassium fertilization were applied during fruit bearing period in spring, along with biostimulators Viva®, Megafol® and their combination. The specific activities of guaiacol peroxidase (GPXs; EC 1.11.1.7), catalase (CATs; EC 1.11.1.6), ascorbate peroxidase (APXs; EC 1.11.1.11) and glutathione reductase (GRs; EC 1.6.4.2) in strawberry leaf were stimulated by biostimulators and reduced fertilization. The strongest link seen here was between the enzymes of ascorbate-glutathione cycle (APXs and GRs), which were positively related to trifoliate leaf fresh mass (TLFM). The highest TLFM was observed in
Megafol® treated plants.
Ključne riječi
antioxidative activity; ascorbate peroxidase; biostimulators; catalase; fertilization; Fragaria x ananassa Duch; glutathione reductase; guaiacol peroxidase; leaf; strawberry
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