Search results for: B. Politycka
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We examined whether allelochemical stress leads to increased lipoxygenase activity in roots of sweet maize (Zea mays L. ssp. saccharata), pea (Pisum sativum L.) and radish (Raphanus sativum L. var. radicula). The lipoxygenase activity of soluble and membrane-bound fractions was assessed in roots after exposure to ferulic and p-coumaric acids. Lipid peroxidation and membrane injury were determined...
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Resztki korzeniowe jabłoni trzech odmian ‘Cortland’, ‘Elstar’ i ‘Szampion’ dodane do podłoża hamowały wzrost siewek ‘Antonówki’. Zgodnie z podjętym celem w pracy przeprowadzono identyfikację związków fenolowych występujących w korzeniach jabłoni, która wykazała obecność trzech związków fenolowych - florydzyny, naringeniny i kwasu chlorogenowego. Związki te zastosowane w testach biologicznych w stężeniach...
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Herba Polonica > 2009 > 55 > 3 > 133-139
The object of experiments carried out in 2007 and 2008 were plants of lemon balm (Melissa officinalis L.) which were at that time in the 1st, 3rd and 4th year (2007) and in the 2nd, 4th and 5th year (2008) of growing. The soil from plots on which the plants were grown was studied as well. The yield of fresh and dry matter of the herbal raw material as well as the essential oil content in the raw material...
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Investigations have been performed on phenolic compounds and allelochemical effect in soil from an apple orchard enriched with 1% apple leaves or roots and stored for 3 months at different temperatures (-5°C, +5°C and 20°C). As a result of the addition of apple residues to the soil its phenolic content increased 4-fold in the case of leaves and 7-fold in the case of roots. Temperature played a key...
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The studies have been performed to trace changes in the soil content of phenolic compounds entering from decomposing apple leaves and roots, depending on the type and pH of soil and the rate of added apple residues. In has been found that roots added to soil were a richer source of phenolic compounds than leaves. Amount of phenols entering to soil from apple leaves and roots was in proportion with...
