All rights reserved ORIGINAL PAPER 11238 (original) (raw)

The paper present histo-anatomic aspects, recorded in seedlings of maize (Zea mays L.) grown under the influence of spruce bark polyphenolic extract (SBPE). Spruce barck polyphenolic extract was characterized in terms of the total content of polyphenols, tannins, flavonols, flavonoids and anthocyanins in a previous paper. It is known that, natural polyphenols are essential compounds in stimulating plant growth and development. The aim of this study was to identify the internal structure changes in maize seedlings, under the influence of SBPE, applied in two concentrations (SB1-190 mg GAE / L and SB2-130 mg GAE / L). It was observed, compared with the control, that SBPE determines a better development of the absorbents bristle and increase leading bundles number and central vessels metaxylem. SBPE in lower concentrations has positive effects that can be attributed to antioxidant properties. The results recorded in this study open new pathways of research in the field.

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