نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه علوم باغبانی، دانشکده کشاورزی و منابع طبیعی، دانشگاه تهران، کرج، ایران
2 گروه علوم باغبانی، دانشکده کشاورزی و منابع طبیعی، دانشگاه تهران، کرج،، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
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.
کلیدواژهها [English]
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