Allelopathic Effects of Tecoma stans & Ficus Nitida on Germination and Growth of Barley Crop

• Masoud Moustafa Zatout

  Faculty of Natural Resources and Environmental Sciences, Derna University, Libya

  Author

• Essam Moustafa Shanib

  Department of Botany, Faculty of Science, Derna University, Libya

  Author

• Al-Mutasim Billah al-Naili

  Faculty of Natural Resources and Environmental Sciences, Derna University, Libya

  Author

• Rawida Muhammad

  Faculty of Natural Resources and Environmental Sciences, Derna University, Libya

  Author

Many plants have the ability to secrete chemicals that inhibit the germination and growth of neighboring plants, a phenomenon known as allelopathy. These substances are present in all parts of the plant and can hinder cell division and root elongation. The study aimed to evaluate the effect of aqueous extracts from the leaves and bark of Tecoma and Ficus trees on the germination and growth of barley seeds. The results showed that extracts at concentrations of 25%, 50%, and 75% had no significant effect on germination rate, root length, and shoot length compared to the control. Conversely, the highest concentration (100%) showed a clear inhibitory effect on the germination and growth of barley seeds. No significant differences were found in the effect between the two tree types (Tecoma and Ficus) when using leaf extracts on all studied traits. Regarding the bark extract, no significant differences were observed between the two types in germination rate and root length, but a significant difference was noted in shoot length of barley between the effects of Tecoma and Ficus bark extracts. It is concluded that the inhibitory effect of these imported trees appears only at very high concentrations, which may limit their risk under natural conditions, with the necessity to monitor the effect of their bark on the vegetative growth of local plants

1. Masoud Moustafa Zatout, Faculty of Natural Resources and Environmental Sciences, Derna University, Libya

   ⁴Faculty of Natural Resources and Environmental Sciences, Derna University, Libya

2. Essam Moustafa Shanib, Department of Botany, Faculty of Science, Derna University, Libya

   Department of Botany, Faculty of Science, Derna University, Libya

3. Al-Mutasim Billah al-Naili , Faculty of Natural Resources and Environmental Sciences, Derna University, Libya

   ⁴Faculty of Natural Resources and Environmental Sciences, Derna University, Libya

4. Rawida Muhammad, Faculty of Natural Resources and Environmental Sciences, Derna University, Libya

   ⁴Faculty of Natural Resources and Environmental Sciences, Derna University, Libya

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