Red and blue wavelengths affect the morphology, energy use efficiency and nutritional content of lettuce (Lactuca sativa L.).
Red and blue wavelengths affect the morphology, energy use efficiency and nutritional content of lettuce (Lactuca sativa L.).
复制标题
红色和蓝色波长影响生菜的形态、能量利用效率和营养成分。
DOI：
10.1038/s41598-021-87911-7
复制
发表时间：
2021-04-16
影响因子：
4.6
通讯作者：
Guo WZ
中科院分区：
文献类型：
--
作者：
Chen XL;Li YL;Wang LC;Guo WZ
由于红(R)和蓝(B)LED光具有不同的量子效率和光电转换效率，不同比例的红(R)和蓝(B)LED混合导致不同的能量消耗。为提高封闭式植物生产系统的能量利用效率，研究了不同R、B比例对黄油生菜电利用效率(EUE)、光能利用效率(LUE)及品质的影响。在人工光照条件下，采用11种不同的光处理组合(100%R、90%R、80%R、70%R、60%R、50%R、40%R、30%R、20%R、10%R、0%R，其余为B)，以相同的光周期(2 0 0 ± 3μ−·m−2·S−1，16 h)处理生菜幼苗。结果表明，当R比例大于70%时，出现明显的叶柄变形，且随着R比例的增加，叶柄变形加剧。在90%R处理下，生菜的EUE和LUE最高，分别为3.64%和1.20%。90%R处理的生菜产生1 g干重所需的最小光子数和最小耗电量分别为2.92 Mol和1.67 MJ，且处理组的蔗糖含量显著高于R<50%的处理。80%R处理的生菜可溶性糖含量最高，粗纤维和硝酸盐含量最低(与最小值无显著差异)。混合RB光中Rr比例超过50%有利于生菜中己糖和蔗糖的积累，也有利于硝酸盐的分解。在本试验条件下，100%R处理生菜的维生素C含量显著高于其他处理。总体来看，在封闭式工厂中，R和B的比例影响生菜的能量利用效率和品质，但植株对R和B比例的反应因指标不同而不同。因此，在选择R和B的最佳比例之前，应确定一些最优先的指标。
Since red (R) and blue (B) LED light has different quantum efficiency and photoelectric conversion efficiency, mixed RB with different proportions of R and B results in varied energy consumption. In order to improve the energy use efficiency of the closed-type plant production systems, the effects of R and B proportions on the electric use efficiency (EUE), light use efficiency (LUE) as well as the quality of butter leaf lettuce were evaluated in this study. Lettuce seedlings were cultivated in a plant factory with artificial lighting (PFAL) and subjected to eleven combinations of R and B (100%R, 90%R, 80%R, 70%R, 60%R, 50%R, 40%R, 30%R, 20%R, 10%R, 0%R; the rest of the photons in each treatment were B) with the same total photosynthetic photon flux density (PPFD) and photoperiod (200 ± 3 μmol·m−2·s−1, 16 h) for 35 days. The results showed that palpable petiole distortion appeared when R proportion was more than 70% and the distortion was aggravated with the increase of R proportion. The highest EUE and LUE were both detected in lettuce under 90%R treatment, which were respectively 3.64% and 1.20%. The least number of photons and the least electricity amount required to produce 1 g dry weight of lettuce was respectively 2.92 mol and 1.67 MJ, which were both detected in lettuce treated with 90%R. The sucrose content in lettuce treated with more than 50%R was significantly higher than those treated with less than 50%R (50%R included). Lettuce treated with 80%R possessed the highest soluble sugar content as well as the lowest crude fiber and nitrate content (not significantly different with the minimum values). R proportion exceeding 50% in mixed RB light was beneficial to the accumulation of hexose and sucrose, as well as the decomposition of nitrate in lettuce. The vitamin C content in lettuce treated with 100%R was significantly higher than that in lettuce under other treatments in the study. On the whole, the study indicated that the proportions of R and B affected the energy use efficiency and quality of lettuce in closed plant factory, however the responses of plants to the proportions of R and B varied according to different indexes. Thus, some indexes of top priority should be determined before choosing the optimal proportions of R and B.
登录
查看更多内容
影响因子：
1.9
作者：
HOENECKE, ME;BULA, RJ;TIBBITTS, TW
通讯作者：
TIBBITTS, TW
影响因子：
2
作者：
Matsuda, Ryo;Ohashi-Kaneko, Keiko;Kurata, Kenji
通讯作者：
Kurata, Kenji
影响因子：
6.5
作者：
Bogatek, R;Côme, D;Lewak, S
通讯作者：
Lewak, S
影响因子：
6.9
作者：
Hogewoning SW;Trouwborst G;Maljaars H;Poorter H;van Ieperen W;Harbinson J
通讯作者：
Harbinson J
影响因子：
7.4
作者：
Folta, KM
通讯作者：
Folta, KM