Optimization of Growth and Quality of Cucumber Scion Seedlings for Grafting Operations Under the Influence of Different LED Light Spectra

Abedini, Mostafa; Baybordi, Ali; Esmaeili Abdar, Ali; Moharrami, Mahdi; Salehi, Reza; Mahmoodi, Mahdieh; Jafari, Amir Mohammad

doi:10.22059/ijhs.2025.387983.2240

Optimization of Growth and Quality of Cucumber Scion Seedlings for Grafting Operations Under the Influence of Different LED Light Spectra

Articles in Press

Document Type : Full Paper

Authors

Mostafa Abedini ¹

Ali Baybordi ¹

Ali Esmaeili Abdar ²

Mahdi Moharrami ¹

Reza Salehi ¹

Mahdieh Mahmoodi ¹

Amir Mohammad Jafari ¹

¹ Department of Horticultural Science, Faculty of Agricultural & Natural Resources, University of Tehran, Karaj, Iran

² Department of Horticultural Science, Faculty of Agricultural &amp; Natural Resources, University of Tehran, Karaj, Iran

10.22059/ijhs.2025.387983.2240

Abstract

In this research, the effects of different LED light spectra, including 100% green light (single spectrum), 40% red light + 60% blue light, 80% red light + 20% blue light, and 90% red light + 10% blue light (combined light treatments), with a constant intensity of 100 ± 5 μmol m-2 s-1, for 14 days were evaluated on ‘OREKA’ cucumber seedlings to optimize them for grafting. . According to the results, The seedling height in the green light treatment was 36% higher than the highest seedling height in the combined light treatments. Increasing the percentage of red light from 40% to 90% led to a 13.5% increase in stem diameter. Increasing the percentage of blue light from 10% to 60% led to a 55% and 38% reduction in leaf area and leaf dry mass, respectively. Increasing red light increased root length and root dry mass and other root traits. However, green light had a negative impact on root traits that’s causing a decrease in leaf area and dry weight in this treatment. The highest Light use efficiency occurred in treatments with a high percentage of red light. In the end, the light treatment with a ratio of 80% red light and 20% blue light can be suitable for producing cucumber scions.

Keywords

shade avoidance response

phytochromes

cryptochromes

combined blue-red light

green light

Subjects