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首页> 外文期刊>Journal of Photochemistry and Photobiology, B. Biology: Official Journal of the European Society for Photobiology >Study of the influence of wavelengths and intensities of LEDs on the growth, photosynthetic pigment, and volatile compounds production of Lippia rotundifolia Cham in vitro
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Study of the influence of wavelengths and intensities of LEDs on the growth, photosynthetic pigment, and volatile compounds production of Lippia rotundifolia Cham in vitro

机译：对LED波长和强度对Lippia Rotundifolia Cham的生长，光合色素和挥发性化合物产生的影响的研究

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摘要

Lippia rotundifolia Cham. is in the family Verbenaceae and is endemic to the Cerrado. This species is aromatic and characterized by the presence of glandular trichomes on its leaves that are rich in monoterpenes. The objective of this study was to evaluate the growth, photosynthetic pigment production, and chemical composition of L. rotundifolia grown in vitro under different light wavelengths and intensities. The light intensities consisted of five treatments using cool white fluorescent lamps at 20, 54, 78, 88, and 110 mu mol m(-2) s(-1). The light quality consisted of six treatments using light-emitting diodes (LEDs) in different light wavelengths, namely, white, red, blue, and their interactions: 1R:1B, 2.5R:1B, and 1R:2.5B. After 45 days, the biometric parameters, photosynthetic pigment content, and volatile compounds were evaluated. The lower light intensities of 20 and 54 mu mol m(-2) s(-1) generated higher growth, photosynthetic pigment content, and biomass accumulation. Myrcene and pentadecane were highest under light intensities of 88 and 110 mu mol m(-2) s(-1), respectively. The highest limonene and ocimenone levels were obtained at 20 and 54 mu mol m(-2) S-1 intensity, respectively, and the highest myrcenone content was obtained at 78 mu mol m(-2) s(-1) intensity. Regarding the light wavelengths, the combination of red and blue spectra further stimulated plantlet growth, and the 2.5R:1B combination obtained the best biometric data and total chlorophyll content. The z-ocimenone chemical compound contents were highest under the 1R:2.5B light spectrum. The monochromatic blue spectrum increased the myrcene and limonene content but decreased the myrcenone content, which was increased by red light. The highest pentadecane contents were obtained with the white spectrum and the red and blue combinations.
机译：Lippia罗水玉米。是在博马西亚的家族中，对Cerrado流行。该物种是芳香族的，其特征在于在其叶子上含有富含单波通的叶片的存在。本研究的目的是评估在不同光波长和强度下在体外生长的L.罗水的生长，光合色素生产和化学成分。光强度包括在20,54,78,88和110μmm（-2）s（-1）的冷白色荧光灯的五种处理。光的质量由使用不同光波长的发光二极管（LED），即白色，红色，蓝色及其相互作用，包括六种处理：1R：1b，2.5r：1b和1r：2.5b。 45天后，评价生物识别参数，光合色素含量和挥发性化合物。较低的20和54μmm（-2）s（-1）的较低的强度产生较高的生长，光合色素含量和生物质积累。在88和110μm-2）（-1）的光强度下，亚丙烯和五苯胺分别最高。在20和54μmMolM（-2）S-1强度下获得最高柠檬烯和咬合水平，并且在78μmM（-2）S（-1）强度下获得最高的核酮含量。关于光波长，红色和蓝色光谱的组合进一步刺激了植物生长，并且2.5R：1B组合获得了最佳的生物识别数据和总叶绿素含量。在1R：2.5b光谱下，Z-胆奈化合物的含量最高。单色蓝色光谱增加牛键和柠檬烯含量，但随着红光增加，含量含量增加。用白色谱和红色和蓝色组合获得最高戊烷内容物。

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