Evaluation of lawsonia inermis leaf extracts for their in vitro fungitoxicity against certain soilborne pathogens

Girijashankar, V and Thayumanavan, B (2005) Evaluation of lawsonia inermis leaf extracts for their in vitro fungitoxicity against certain soilborne pathogens. Indian Journal of Plant Protection, 33 (1). pp. 111-114. ISSN 0253-4355

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Abstract

Screening of Lawsonia inermis leaf extracts for their fungitoxicity was carried out in vitro against some selected soil-borne phytopathogens, Rhizoctonia solani. Pythium aphanidermatum and Macrophomina phaseolina. Of the three solvent extracts studied, cold-water extract at 10% concentration showed a maximum of 70% inhibition of the mycelial growth of R. solani. Methanol extract at 2.5% concentration completely inhibited P. aphanidermatum while the same at 10% proved effective against M. phaseolina by 60% when compared to cold water and petroleum ether extracts. Petroleum ether extract was ineffective against R. solani and M. phaseolina. The amount of total phenols was 4.5 mg/g of fresh leaf tissue. Reverse phase high performance liquid chromatographic analysis of the cold-water extracts revealed the presence of four different absorption peaks of which only two compounds could be identified i.e. tannic acid and catechol

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Uncontrolled Keywords:	Lawsonia inermis, Rhizoctonia solani, Pythium aphanidermatum, Macrophomina phaseolina, fungitoxicitye
Subjects:	Others > Soil Science
Depositing User:	Ms K Syamalamba
Date Deposited:	03 Dec 2012 10:18
Last Modified:	07 Feb 2014 05:32
URI:	http://oar.icrisat.org/id/eprint/6253
Official URL:	http://indianjournals.com/ijor.aspx?target=ijor:IJ...
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	UNSPECIFIED
Links:	http://scholar.google.co.in/scholar?as_q...

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