Allelopathy effect of Acacia reddiana tree on its seed germination
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Allelopathy, Acacia, water extract, alcoholic extract, seed germination.
Abstract
This research was aimed to examine the impacts of different concentrations of water and alcoholic extracts tree(Acacia reddiana) on its seed germination . Data revealed that allopathic effect of Acacia components according to the extract type and the extracted part of the plant Where the dry leaf water extract showed significant reduction effect on Acacia seed germination more than ethanol extract. The dry leaf extract has higher effect than the other parts of the Acacia plant followed by dry litte , dry stems, dry roots & fresh roots . The water extract of fresh leaf and fsesh stems showed positive impact on seed germination. This type of self-toxicity may explain the absence of new seeding around Acacia trees in the desert wadis. This also may be explained as plant strategies to compete and acclimate in desert to use the limited resources.
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