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Ecological Section

Zaidi, Mudassir [1].

Allelopathic effects of Vincetoxicum stocksii and Zygophyllum fabago..

The two endemic medicinally important plants Vincetoxicum stocksii (Asclepiadaceae) Ali & Khatoon, and Zygophyllum fabago L. (Zygophyllaceae) of Balochistan, Pakistan posses allelopathic effects. These plants are traditionally used as poultice for the treatment of external cancers, wounds, and injuries in man and animals. The aqueous and methanolic extract of whole plants of V. stocksii and Z. fabago were fractioned and investigated for their phytotoxicity. 1g/20ml of the aqueous and methanolic extracts were dissolved in distilled water, different concentrations of 10, 100, 1000Ķg were taken and added to the media. Their allelopathic effects on Pennisetum americanum L. and Lemna acquinoctialis Welv., were checked. These are simple tool to monitor the plantís effects as inhibitors or stimulators. The percentage germination, radicle and frond growth, development and yield of the seedlings of the test species were significantly inhibited by both methanolic and aqueous extracts. The plants were found to be toxic, Z. fabago more than V.stocksii They also significantly reduced the percentage germination, radical and frond growth at all concentrations. The growth was found to be more susceptible to the methanolic extracts then aqueous extracts. The phytotoxic effects were more at high concentrations and were significant when compared with standard herbicide parquat.


1 - University of Balochistan, Department of Botany, C-9 University Colony, Quetta, 83700, Pakistan

Keywords:
Pakistan
Allelopathic effects
Vincetoxicum stocksii
Zygophyllum fabago.

Presentation Type: Paper
Session: 29-7
Location: Wasatch (Cliff Lodge)
Date: Tuesday, August 3rd, 2004
Time: 9:30 AM
Abstract ID:394


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