A range of allelopathic compounds have been found in Eucalyptus rostrata. Two noxious weeds, Chenopodium album and Portulaca oleracea, were studied for their allelopathic effect of Eucalyptus rostrata leaf (ERLAE) and bark (ERBAE) aqueous extracts on seed germination and seedling growth. Depending on the extract type and recipient species, the biological action of the two types of extracts on germination efficiency differs. The extracts had the following effect on the two weeds: ERLAE > ERBAE, and the action in C. album was practically as effective and substantial as it was in P. oleracea. The current study's findings suggest that the presence of allelochemicals in the aqueous extracts causes a slower rate of cell division and elongation, which results in shorter plumule and radical lengths. Finally, the findings of this study may help to solve the problem of excessive use of synthetic herbicides by applying and testing a variety of promising medicinal plants rich in allelochemicals, such as E. rostrata.
Author(S) Details
H. M. Abou-Zeid
Department of Botany and Microbiology, Faculty of science, Alexandria University, Alexandria, Egypt.
S. M. EL-Darier
Department of Botany and Microbiology, Faculty of science, Alexandria University, Alexandria, Egypt.
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