Sumi Mousumi Jahan, Jahan Noushin, Thamid Syed Sakib, Tarik Md Emon Ibne, Hassannejad Sahar, Rahimi Mehdi, Imran Shahin
Department of Crop Botany, Khulna Agricultural University, Khulna, 9100, Bangladesh.
Department of Agronomy, Khulna Agricultural University, Khulna, 9100, Bangladesh.
BMC Plant Biol. 2025 May 3;25(1):582. doi: 10.1186/s12870-025-06621-8.
Red and green lettuce baby greens provide additional health benefits because they are high in nutrients, pigments, and antioxidants. This study examines red coral lettuce (Lactuca sativa L. var. cripsa) and green lettuce (Lactuca sativa L. var. longifolia) baby greens grown for 20 days in a soil-vermicompost-compost (50:30:20) mixture to determine how different LED light spectra affect their growth, pigment accumulation, and antioxidant qualities. Plant height, biomass, and other growth parameters were evaluated manually, while pigments, phenolics, and flavonoids were analyzed using spectrophotometric techniques. In terms of growth, green lettuce fared better than red lettuce, with a biomass of 5.90 ± 0.35 g/ 100 plant and a plant height of 6.86 ± 0.23 cm, particularly during exposure to red + blue light. Red + blue as well as red light caused a considerable decrease in chlorophyll concentration; under red light, green lettuce's chlorophyll content dropped by up to 59.61%. Both species' phenolic (100%) and flavonoid (100%) contents were increased by white light, but red light produced the lowest levels. Blue light maintained the highest levels of carotenoid concentration while all other treatments saw a decline. With white light maximizing antioxidant content and red + blue light encouraging growth, principal component analysis (PCA) analysis demonstrated the substantial impact of light treatments on pigment and biochemical composition. Overall, the study concludes that treatments with LED light have a significant impact on red and green lettuce baby greens' development, pigment buildup, and antioxidant qualities.
红色和绿色的嫩生菜具有额外的健康益处，因为它们富含营养、色素和抗氧化剂。本研究考察了在土壤-蚯蚓堆肥-堆肥（50:30:20）混合物中生长20天的红色珊瑚生菜（Lactuca sativa L. var. cripsa）和绿色生菜（Lactuca sativa L. var. longifolia）嫩生菜，以确定不同的LED光谱如何影响它们的生长、色素积累和抗氧化特性。手动评估株高、生物量和其他生长参数，同时使用分光光度技术分析色素、酚类和黄酮类化合物。在生长方面，绿色生菜比红色生菜表现更好，生物量为5.90±0.35克/100株，株高为6.86±0.23厘米，尤其是在暴露于红光+蓝光期间。红光+蓝光以及红光导致叶绿素浓度显著下降；在红光下，绿色生菜的叶绿素含量下降高达59.61%。白光使两个品种的酚类（100%）和黄酮类（100%）含量增加，但红光产生的含量最低。蓝光保持了最高水平的类胡萝卜素浓度，而所有其他处理的类胡萝卜素浓度均下降。由于白光使抗氧化剂含量最大化，红光+蓝光促进生长，主成分分析（PCA）表明光照处理对色素和生化成分有重大影响。总体而言，该研究得出结论，LED光照处理对红色和绿色嫩生菜的发育、色素积累和抗氧化特性有显著影响。
