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| International Agrophysics |
| wydawca: | Instytut Agrofizyki
im. B. Dobrzańskiego
PAN
w Lublinie |
| ISSN: |
0236-8722 |
vol. 20, nr. 4 (2006)
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poprzedni artykuł wróć do listy artykułów następny artykuł
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Influence of water stress on growth, essential oil, and chemical composition
of herbs (Ocimum sp.)
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Kh.A. Khalid
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Department of Cultivation and Production of Medicinal and Aromatic Plants, National Research Centre, Dokki, Giza, Egypt
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vol. 20 (2006), nr. 4,
pp. 289-296
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streszczenie
This work investigates the influence of water
stress on vegetative growth, essential oil, proline, total carbohydrates,
N, P, K, and protein contents of two species of an herb
plant ie Ocimum basilicum L. (sweet basil) and Ocimum americanum
L. (american basil). Experiments were carried out during
two successive seasons, 2004 and 2005, with experimental pots
containing Typic Torrifluvents soil (a clay loam) in a growth
chamber at the Experimental Farm, National Research Center
(NRC), Giza, Egypt.
Seedlings were treated with different levels of water-stress,
determined as a percentage of field water capacity (FWC) by
weight (50, 75, 100, and 125%). Fresh and dry weights of the herbs
were significantly influenced by water stress. For both species
under water stress, essential oil percentage, the main constituents
of essential oil, proline, and total carbohydrate content increased,
and N, P, K, and protein content decreased. Seventy five percent
field water capacity resulted in the highest yield of herb and
essential oil for both species.
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słowa kluczowe
Ocimum sp., water stress, vegetative growth,
essential oil, chemical composition
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