biologia plantarum

International journal on Plant Life established by Bohumil Nìmec in 1959

Biologia plantarum 39:425-431, 1997 | DOI: 10.1023/A:1001178300569

Does allelopathy involve in the association pattern of Trifolium resupinatum L.?

A.A. El-Khatib1
1 Department of Botany, Faculty of Science, Sohag, Egypt

Indoor experiments demonstrated that allelopathic potential of rosette and flowering plants of qort is an important factor explaining the growth reduction of its associated species. Aqueous tissue extracts of flowering plants exhibited strong inhibitory effects on the germination percentage and radicle growth rate of the tested species as compared with those of vegetative plants. Under laboratory conditions, this inhibition was in agreement with toxicity assessments of soil samples collected from the rhizosphere of T. resupinatum L., where shoot and root dry mass of the tested species were significantly reduced. Detoxification of allelochemicals by presence of activated carbon can eliminate the inhibitory effects of the different extracts. This technique clarifies the occurrence of allelopathic interference by qort on seed germination and seedling growth, and hence suspects the allelopathic potential of qort in the growth reduction of associate species under field conditions along with competition.

Keywords: allelochemicals; competition; growth parameters; Melilotus indicus; Portulaca oleracea; qort; soil residuals
Subjects: allelopathy, association pattern; competition, allelochemicals; growth reduction, qort allelopathic potential; Melilotus indicus; Portulaca oleracea; qort, allelopathic potential; Trifolium resupinatum

Published: November 1, 1997  Show citation

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El-Khatib, A.A. (1997). Does allelopathy involve in the association pattern of Trifolium resupinatum L.? Biologia plantarum, 39(3), 425-431. doi: 10.1023/A:1001178300569
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