Growth studies on an elemicin containing grass: cymbopogon pendulus (nees ex. steud) wats in jammu

摘要

Studies were conducted to assign physiological basis for variation in growth and essential oil production in Cymbopogon pendulus at Jammu. Attempt has been made to correlate morpho-physiological characters of the plant to essential oil yield at various growth stages. The analysis suggests that among the morphological characters i.e. plant height, number of tillers/plant and number of leaves/plant exhibited significant correlation with essential oil yield/plant at flowering state, after attaining 90 days after planting the crop vegetatively through tussocks, thereafter a declined trend of essential oil yield/plant was observed. Maximum elemicin content 50%, as a major chemical constituent of its essential oil had also been observed at flowering stage. Among the physiological characters, a significant correlation between essential oil production/plant with respect to CGR (r = 0.6018) and NAR (r = 0.9474). Leaf area index (LAI) and Specific leaf weight (SLW) did not exhibit, significant correlation with essential oil yield/plant but Harvest Index showed significant correlation with CGR, NAR and RGR.