PDF(Pubmed)
Abstract：
Light is a crucial environmental factor that profoundly influences the growth and development of plants. However, the precise mechanisms by which light affects biochemical processes and growth and development factors in Thymus vulgaris remain unknown, necessitating further investigation. Hence, this study aimed to investigate the impact of different light spectra, including red, blue, red-blue, and white lights, on the morphological characteristics, primary, and specialized metabolites of T. vulgaris. Compared to white light, red light significantly increased leaf area (by 64 %), the number of branches (by 132 %), and dry weight (by 6.2 %), although a 40 % reduction in fresh weight was observed under red light conditions. Red-blue light notably enhanced canopy width, fresh weight, and dry weight. Gas chromatography/mass spectrometry (GC/MS) analysis of the plant\'s essential oil (EO) revealed that p-Cymene and γ-Terpinene were present at the highest levels. Notably, p-Cymene exhibited the highest concentrations under white light and blue light treatments, reaching 60.92 % and 59.53 %, respectively. Moreover, under the same light conditions, phenol and antioxidant levels were significantly elevated. Overall, these findings indicate that red and red-blue light spectra are the most favorable for thyme production.
摘要：
光是影响植物生长发育的重要环境因素。然而,光影响胸腺生化过程和生长发育因素的确切机制尚不清楚，需要进一步调查。因此，本研究旨在探讨不同光谱的影响，包括红色,蓝色,红蓝,和白光，在形态特征上，小学,和寻常型T.的特殊代谢产物。与白光相比，红光显著增加叶面积(64%)，分支机构数量(减少132%)，和干重（6.2%），尽管在红光条件下观察到鲜重减少了40％。红蓝光显著增强了树冠宽度，鲜重,和干重。植物精油（EO）的气相色谱/质谱（GC/MS）分析显示，对-西梅烯和γ-萜品烯的含量最高。值得注意的是,p-Cymene在白光和蓝光处理下表现出最高的浓度，达到60.92%和59.53%，分别。此外，在相同的光照条件下，苯酚和抗氧化剂水平显着升高。总的来说,这些发现表明，红色和红色-蓝色光谱是最有利的百里香生产。
