STRAWBERRY (FRAGARIA X ANANASSA DUCH) LEAF ANTIOXIDATIVE RESPONSE TO BIOSTIMULATORS AND REDUCED FERTILIZATION WITH N AND K

STRAWBERRY (FRAGARIA X ANANASSA DUCH) LEAF ANTIOXIDATIVE RESPONSE TO BIOSTIMULATORS AND REDUCED FERTILIZATION WITH N AND K

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Strawberry 5 Piece Queen Poster Bedroom 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; FLASHLIGHTS 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.