EFFECT OF GUANINE, ALANINE AND THYMINE ON THE GROWTH, CHEMICAL COMPOSITION AND OIL QUALITY OF Rosmarinus officinalis, L. PLANT | ||
| Journal of Plant Production | ||
| Article 20, Volume 32, Issue 6, June 2007, Pages 4643-4658 PDF (763.86 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpp.2007.208785 | ||
| Author | ||
| Hasnaa A. H. Gouda* | ||
| National Organization for Drug Control and Research (NODCAR) | ||
| Abstract | ||
| Two field experiments were carried out to study the effect of the nitrogenous compounds (guanine, alanine and thymine) as foliar application on growth, chemical composition and oil quality of Rosmaninus officinalis, L. plant. All these compounds increased plant height, number of branches/plant, fresh and dry weights of leaves and stems. This promotive effect reached maximum in response to alanine combined with guanine each at 200 ppm. Similar responses for oil percentage, carbohydrates, nitrogen, phosphorus and potassium contents were attained due to foliar application of nitrogenous substances. Oil analysis showed promotive effects for major component of essential oil i.e. 1,8 cineole, camphor, borneol and bornyl acetate. The highest 1, 8 cineole percentage was obtained by 200 ppm guanine combined with alanine at 100 ppm, foliar application of thymine at 150 ppm alone or combined with guanine at 100 ppm resulted in increasing camphor percentage, while alanine at 100 ppm was effective an increasing bornyl acetate percentage. Borneol percentage was decreased due to all nitrogenous substances used. | ||
| Keywords | ||
| Rosemary (Rosmarinus officinalis; L.); Guanine; Alanine; Thymine; Growth; Chemical composition; Essential oil; GLC | ||
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