engleski

Seed allelopathy between herbs and weed species

The aim of the study was to evaluate allelopathic effect of herbs and weed seeds cogermination on germination and growth of weed species in two experiments. In Petri dish experiment, the highest reduction of germination was recorded in treatment with lovage seeds with decrease in redroot pigweed and black nightshade germination by 93.6 and 69.7%, respectively. Both positive and negative effects were observed on root and shoot length of weed seedlings, while lovage seeds had the greatest impact on the reduction of fresh weight. Allelopathic effect was less pronounced in the experiment with pots. The greatest negative effect was recorded for root length of Johnson grass with the reduction of 38.5% in treatment with basil seeds.On average, redroot pigweed and hoary cress proved to be the most susceptible weeds in Petri dish experiment, however overall, the degree of allelopathic potential depended on both donor and acceptor species.

allelopathy ; cogermination ; seedlings length ; aromatic and medicinal plants

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