Abstract

The culturing Khus in controled glasshouse condition in sand cultures for maximum essential monoterpene oil(s) was found (0.21%) in young developed middle position circumferences of roots. At middle position of leaf, net photosynthetic and contents of chlorophyll were affected. The maximum peroxidase activity was obtained at middle position  of  leaf  and  roots circumferances  area,  with the maximum  production of  biomolecule of khusimol and  khusinol   at  250 mg Zn/L. The maximum of monoterpene oil(s) (0.21%) was also found at middle position of developed roots. However, the relative contents of khusimol and Khusinol, which varied at different circumferanceal area of positions. As a result of different root developmental positions, the contents of Fe, Mn, Zn, and Cu were smaller in quantity in Vetiver. Their maximum contents were observed at middle positions of developed root‘s. Thus, the value addition of essential monoterpene oil(s) seems for commercial exploitation at large scales to be for the collection of developed roots position at middle levels (roots area of 5th positions developments) for better quality of total essential oil of Khus.

Key words: Chlorophyll, dry mass, leaf area, net photosynthetic rate, plant height, saccharides, Zn.