Nájera Cinthia, Ros Margarita, Moreno Diego A, Hernández-Lara Alicia, Pascual José Antonio
Department of Agronomy, University of Almeria, 04120 Almeria, Spain.
Department of Soil and Water Conservation and Organic Wastes Management, CEBAS-CSIC, Campus Universitario de Espinardo - 25, E-30100 Murcia, Spain.
Heliyon. 2024 Feb 20;10(4):e26390. doi: 10.1016/j.heliyon.2024.e26390. eCollection 2024 Feb 29.
This work aimed to evaluate the growth of two species of microgreens (mizuna and pak choi), using agro-industrial compost as growing media in two different mixes versus one hundred percent peat, under two different LED illumination spectra (LED 1 and LED 2) in a 14 h photoperiod. The experiment was carried-out for two times. Biomass yield, glucosinolates, and phenolic compounds, and nitrate (NO) content were analysed in leaf tissues. In both species, the highest fresh and dry biomass production was in compost:peat (50:50%) and LED 2 (Blue/Red/Far Red). In general, compost had a greater influence on nitrate content than light, but in the microgreen pak choi, the anthocyanin content was inhibited by the compost treatment. In the other hand both LED illumination had a positive effect on mizuna for glucosinolates and anthocyanins, and LED 2 also showed a positive effect on pak choi for anthocyanin. Therefore, the use of agri-food compost: peat (50:50%) with LED 2 (blue/red) lighting treatment to obtain microgreens in indoor crops is a plausible technology that provides nutritionally and phytochemically rich crops.
这项工作旨在评估两种芽苗菜（水菜和小白菜）的生长情况，在14小时光照周期下，使用农业工业堆肥作为生长介质，以两种不同的混合比例与100%泥炭进行对比，并设置两种不同的LED光照光谱（LED 1和LED 2）。该实验进行了两次。对叶片组织中的生物量产量、芥子油苷、酚类化合物和硝酸盐（NO）含量进行了分析。在这两个品种中，最高的鲜重和干重生物量产量出现在堆肥:泥炭（50:50%）和LED 2（蓝/红/远红）处理组。总体而言，堆肥对硝酸盐含量的影响大于光照，但在小白菜芽苗菜中，堆肥处理抑制了花青素含量。另一方面，两种LED光照对水菜的芥子油苷和花青素均有积极影响，LED 2对小白菜的花青素也有积极影响。因此，在室内作物中使用农业食品堆肥:泥炭（50:50%）并结合LED 2（蓝/红）光照处理来培育芽苗菜是一种可行的技术，能够培育出营养丰富且富含植物化学物质的作物。
