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<p>The use of artificial lighting increases productivity and quality and is becoming more important in agriculture, especially in closed areas where natural light is insufficient. In in vitro propagation, the source, color, and quality of the artificial light are as important for healthy plant growth as the preparation of the nutrient medium and the presence of a&#xa0;healthy donor plant. In this study, the effects of light quality (white, red, and blue LEDs) on plant growth, chlorophyll content, electrolyte leakage (EL), MDA, and antioxidant enzyme activity were investigated in ‘Michele Palieri’ and ‘Italia’ grape varieties under in vitro conditions. Blue LED treatment supported shoot elongation, fresh-dry weight, chlorophyll&#xa0;a/b ratio, and the SPAD index, while a&#xa0;positive effect of white LED treatment was observed in terms of increasing chlorophyll content and carotenoids. The varieties showed variable responses to antioxidant enzyme reactions. In the ‘Michele Palieri’ grape variety, red LED light was more effective for increasing total soluble protein content, white and blue LEDs were more effective in terms of SOD enzyme activity, and white LED light was more effective for increasing APX enzyme activity. In the ‘Italia’ grape variety, blue LED treatment was effective in increasing total soluble protein content, white LED light was effective in increasing SOD enzyme activity, and red LED treatment was effective in increasing APX enzyme activity. As a&#xa0;result, it was revealed that different quality LED light treatments have different effects on yield and quality among grape varieties.</p>

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In Vitro Response of Two Grape Varieties to White, Blue, and Red LED Treatments

  • 期刊论文

  • 发表日期：

    2025年5月21日

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  • Hatice Coşar Tutumlu,
  • Neval Topcu Altıncı

摘要

The use of artificial lighting increases productivity and quality and is becoming more important in agriculture, especially in closed areas where natural light is insufficient. In in vitro propagation, the source, color, and quality of the artificial light are as important for healthy plant growth as the preparation of the nutrient medium and the presence of a healthy donor plant. In this study, the effects of light quality (white, red, and blue LEDs) on plant growth, chlorophyll content, electrolyte leakage (EL), MDA, and antioxidant enzyme activity were investigated in ‘Michele Palieri’ and ‘Italia’ grape varieties under in vitro conditions. Blue LED treatment supported shoot elongation, fresh-dry weight, chlorophyll a/b ratio, and the SPAD index, while a positive effect of white LED treatment was observed in terms of increasing chlorophyll content and carotenoids. The varieties showed variable responses to antioxidant enzyme reactions. In the ‘Michele Palieri’ grape variety, red LED light was more effective for increasing total soluble protein content, white and blue LEDs were more effective in terms of SOD enzyme activity, and white LED light was more effective for increasing APX enzyme activity. In the ‘Italia’ grape variety, blue LED treatment was effective in increasing total soluble protein content, white LED light was effective in increasing SOD enzyme activity, and red LED treatment was effective in increasing APX enzyme activity. As a result, it was revealed that different quality LED light treatments have different effects on yield and quality among grape varieties.