Screening for inhibitory activities of essential oils on the growth of Colletotrichum gloeosporioides (Penz.) Penz. & Sacc., the causal agent of leaf spot disease of Murraya koenigii L.

Padman, Midhila and Janardhana, G. R. (2012) Screening for inhibitory activities of essential oils on the growth of Colletotrichum gloeosporioides (Penz.) Penz. & Sacc., the causal agent of leaf spot disease of Murraya koenigii L. Archives of Phytopathology and Plant Protection, 45 (13). pp. 1575-1581. ISSN 1477-2906

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Abstract

Seven essential oils namely clove, cedar wood, lemongrass, peppermint, eucalyptus, citronella and neem oils were tested for their inhibitory effect on spore germination, growth of germ tube and mycelial growth of Colletotrichum gloeosporioides isolated from diseased Murraya koenigii. All essential oils inhibited the germination and growth of germ tube at different concentrations. However, significant reduction in colony growth was observed with citrus, lemongrass and peppermint oils at 1000, 1500 and 2000 ppm concentrations, respectively. Citrus oil at 1360 ppm inhibited the maximum growth of the fungus followed by lemongrass oil at 1720 ppm and peppermint at 2260 ppm, respectively. The effect of essential oils on mycelial dry weight also showed antifungal activity on the growth of Colletotrichum gloeosporioides. The study revealed the possible utilisation of these essential oils for foliar spray for the management of leaf spot disease of Murraya koenigii.

Item Type:	Article
Subjects:	B Life Science > Botany
Divisions:	Department of > Botany
Depositing User:	C Swapna Library Assistant
Date Deposited:	19 Aug 2019 10:59
Last Modified:	19 Aug 2019 10:59
URI:	http://eprints.uni-mysore.ac.in/id/eprint/6776

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