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Z Naturforsch C. 2008 Sep-Oct;63(9-10):663-6.

Phytotoxicity of major constituents of the volatile oil from leaves of Artemisia scoparia Waldst. & Kit.

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1
Centre for Environment and Vocational Studies, Department of Botany, Panjab University, Chandigarh 160 014, India.

Abstract

The phytotoxicity of the three major monoterpene constituents of the essential oil from leaves of Artemisia scoparia Waldst. & Kit. (redstem wormwood) was investigated. GC/GC-MS analysis revealed that the essential oil (yield 0.84%) is a complex mixture containing 19 monoterpenes, 7 sesquiterpenes and 15 other compounds--aliphatic alcohols, ketones, aromatic hydrocarbons and esters. The three major monoterpenes were beta-myrcene (30.2%), p-cymene (12.8%) and dl-limonene (12.4%). The essential oil and the three monoterpenes exhibited phytotoxicity and reduced germination, seedling growth, chlorophyll content and percent respiration of Avena sativa and Triticum aestivum in a dose-response manner. The inhibitory effect of monoterpenes was comparatively smaller than of the crude essential oil and beta-myrcene was most toxic followed by p-cymene, whereas limonene was least toxic. The study suggests that A. scoparia oil and beta-myrcene can be explored for phytotoxicity against weeds.

PMID:
19040104
[Indexed for MEDLINE]

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