Adverse Effects of Eucalyptus camaldulensis (Dehn) Leaf Extract on Germination and Seedling Growth of Wheat

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Date
1999
Authors
El Atta, H.A.
Bashir, I.A.
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Faculty of Agriculture, University of Khartoum, Shambat, Sudan
Abstract
The effect of water extracts from fresh and dry leaves of Eucalyptus camaldulensis (Dehn), obtained by water distillation, was tested against seed germination and seedling growth of wheat (Triticum aestivum). Extracted crude oil significantly (P< 0.001) reduced seed germination on blotters and in sand. The mean germination percentage on blotters was 100%, 20% and 0.0% in the control and dry and fresh leaf oil, respectively, whereas in sand it was 100%, 66% and 39.5% in the control and dry and fresh leaf oil, respectively. The crude oil also significantly (P<0.001) reduced seedling growth expressed in reduced number of leaves, leaf area and shoot length. The mean number of leaves/seedling was 2.54, 2.25 and 1.95, the mean leaf area was 5.12,3.15 and 2.33 cm2 and the mean shoot length was 19.81, 13.98 and 11.50 cm in the control and dry and fresh leaf oil, respectively. Oil extracted from fresh leaves was more effective than that from dry leaves. The effect was significantly correlated with oil concentration
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Page(s): 7 (2), 70-80,16 Ref
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