| Autor: |
BOUCHAOUR-DJABEUR, S., BENABDELI, K., HADJADJ, K., SOUFAN, W., TAIB, N., RIHAN, H. Z. |
| Předmět: |
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| Zdroj: |
Applied Ecology & Environmental Research; 2024, Vol. 22 Issue 5, p3941-3957, 17p |
| Abstrakt: |
In north-western Algeria (Tlemcen), we collected morphologically mature acorns separately from 17 trees, and another quantity was collected from the ground in the mountain cork oak forests: Hafir and Zariefet. The germination rate of healthy (H) and slightly damaged (S) acorns reaches 100%. The lowest emergence rates are observed in severely damaged acorns (Sd) (8%), with differences between producing individuals (the maximum recorded for Sd is 67%). The survival rate of plants varies in the same way as the emergence rate: 100% in (H) and 93% in (S). The survival score of (Sd) is 57%. These acorns can continue to produce young seedlings until the embryo is completely wiped out. However, more than 90% of the (Sd) of 64% of the trees remain metabolically inactive. In western Algeria, the 60% decrease in the germination rate of (Sd) seems to be linked to the acorns small size, which are approximately half of those in eastern Algeria. Depredation of acorns by insects hardly affects the growth of young seedlings in the first days of their development, but occurs much later, depending on the physiological integrity of the almond, cotyledonary mass and quality, and the infestation intensity. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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