Ontogenetic variation in the essential oil concentration and its constituents in the five genotypes of Cymbopogon jwarancusa (Jones) Schultz
1997
Dhar, R.S. | Dhar, A.K.
Ontogenetic variation in the essential oil concentration and major components in the five genotypes of Cymbopogon jwarancusa (Khavi grass) was studied. Between 0.50% to 1.64% from stage 1 (green plants spikes initiated) to stage 9 (30-50% leaves brown), the oil content ranged from 0.50% to 1.64%. The main components of Khavi grass oil were piperitone, (44.9-66.8%), elemol (7.0-29.2%) and delta-2-carene (8.3-23.5%). The percentage composition of these constituents changes with the ontogenetic development. delta-2-Carene percentage declined sharply from pre-anthesis (19.8%) to anthesis (5.9%). The piperitone concentration (68.0%) at the time of seed formation, suggesting regulation of oil and oil constituents with the plant growth.
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