Rima Ghafari*¹, Najwa Mouslemanie ¹, Abdullah Katta ²and Imad-Aldeen Alkhalaf ¹

1 Dept. of Botany, Faculty of Science, Aleppo Univ. Syria
2 Dept. of Chemistry, Faculty of Science, Aleppo Univ. Syria.

(*Corresponding author: Rima Ghafari, mail: mirago82@yahoo.com ).

Received: 18/ 04/  2025     Accepted: 17/ 09/ 2025

This research aimed to determine the red laser irradiation effect with wavelength (635) nm and capacity (5) mWat/cm2 on some Sesamum indicum growth parameters, the research took place at the laboratory of plant ecology and pollution, and the laboratory of Nano science and the ecology garden, Faculty of science, University of Aleppo, between June and September 2023. Two groups of seeds dried and soaked in water for three hours were irradiated with red laser for graduated periods (1,5,10,15) min, then planted in pots containing suitable soil and left for the periods of experiments (1,2,3,4) months. at the end of third and fourth month, some growth parameters were determined for the plants such as fresh length and weight of plant shoots and roots, leaves area, and total chlorophyll and carotene. The results showed that the best shoot length statistical differences were registered for dried and wet sesamum seeds irradiated for (15) min reached (104) cm compared to the control (70) cm, and for roots length reached (17) cm compared to the control (7) cm. The results also showed that the highest statistical differences of fresh shoots and roots weight were obtained for period (15) min irradiation of the dried seeds which reached (26) gram compared to the control (6) gram, and also for the leaves area with a highest area (34) cm2 compared to the control (13) cm2. It can be concluded that red laser irradiation enhanced some growth parameters of Sesamum indicum.

Keywords: Laser, growth parameters, Chlorophyll, Sesamum indicum.

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