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Pak. J. Bot., 42(4): 2911-2919, 2010. |
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Updated: 09-12-10 |
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IN VITRO ANTIFUNGAL ACTIVITY OF SELECTED MEDICINAL PLANT
DIFFUSATES AGAINST ALTERNARIA SOLANI, RHIZOCTONIA SOLANI AND
MACROPHOMINA PHASEOLINA
AQSA ASLAM1, FARAH NAZ2, MUHAMMAD
ARSHAD1, RAHMATULLAH QURESHI1* AND C.A. RAUF2
Abstract: The present paper reports the
antifungal activity of plant diffusates from 5 indigenous medicinal
plant species of Potohar region viz., Adhatoda zeylanica, Azadirachta
indica, Capparis decidua, Dodonaea viscosa and Salvadora oleoides.
Antifungal activity was tested against 3 pathogens attacking commercial
crops viz., Alternaria solani, Rhizoctonia solani and
Macrophomina phaseolina. All selected medicinal plants exhibited
considerable distinction in radial mycelial growth of tested pathogens.
Overall, Dodonaea viscosa appeared significantly the most
effective and suppressed the radial mycelial growth of the Alternaria
solani and Rhizoctonia solani, whereas, Adhatoda zeylanica
exhibited maximum inhibition (77.44%) against Macrophomina phaseolina.
However, Salvadora oleoides exhibited minimum inhibition against
all tested pathogens. It was also observed that radial mycelial growth
of selected pathogens reduced at an increase of plant diffusates
concentration. Among 5 concentrations of plant diffusates, the highest
inhibition in radial mycelial growth of all 3 pathogens was observed at
100 and 200g/l respectively, as compared to control, while minimum
inhibition was recorded at 10g/l in all plant diffusates. It may be
concluded from the present investigation that Dodonaea viscosa
can be utilized for the management of fungal diseases caused by
Alternaria solani, Macrophomina phaseolina and Rhizoctonia
solani. 1Department of Botany, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi, Pakistan 2Department of Plant Pathology, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi, Pakistan |
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