Murgueitio-Herrera Erika, Falconí César E, Cumbal Luis, Gómez Josselyn, Yanchatipán Karina, Tapia Alejandro, Martínez Kevin, Sinde-Gonzalez Izar, Toulkeridis Theofilos
Centro de Nanociencia y Nanotecnología, Universidad de las Fuerzas Armadas ESPE, Av. Gral. Rumiñahui s/n, Sangolquí P.O. Box 171-5-231B, Ecuador.
Departamento de Ciencias de la Tierra y de la Construcción, Universidad de las Fuerzas Armadas ESPE, Av. Gral. Rumiñahui s/n, Sangolquí P.O. Box 171-5-231B, Ecuador.
Nanomaterials (Basel). 2022 Jun 4;12(11):1921. doi: 10.3390/nano12111921.
The predominant aim of the current study was to synthesize the nanofertilizer nanoparticles ZnO_MnO-NPs and FeO_ZnO-NPs using Andean blueberry extract and determine the effect of NPs in the growth promotion of cabbage () and Andean lupin ( sweet) crops. The nanoparticles were analyzed by visible spectrophotometry, size distribution (DLS), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Solutions of nanoparticle concentrations were applied to cabbage, with solutions of 270 and 540 ppm of ZnO_MnO-NPs and 270 and 540 ppm of FeO_ZnO-NPs applied to Andean lupin. Zinc was used in both plants to take advantage of its beneficial properties for plant growth. Foliar NPs sprays were applied at the phenological stage of vegetative growth of the cabbage or Andean lupin plants grown under greenhouse conditions. The diameter of the NPs was 9.5 nm for ZnO, 7.8 nm for FeO, and 10.5 nm for MnO, which facilitate the adsorption of NPs by the stomata of plants. In Andean lupin, treatment with 270 ppm of iron and zinc indicated increases of 6% in height, 19% in root size, 3.5% in chlorophyll content index, and 300% in leaf area, while treatment with 540 ppm of iron and zinc yielded no apparent increases in any variable. In cabbage, the ZnO_MnO-NPs indicate, at a concentration of 270 ppm, increases of 10.3% in root size, 55.1% in dry biomass, 7.1% in chlorophyll content, and 25.6% in leaf area. Cabbage plants treated at a concentration of 540 ppm produced increases of 1.3% in root size and 1.8% in chlorophyll content, compared to the control, which was sprayed with distilled water. Therefore, the spray application of nanofertilizers at 270 ppm indicated an important improvement in both plants' growth.
本研究的主要目的是利用安第斯蓝莓提取物合成纳米肥料纳米颗粒ZnO_MnO-NPs和FeO_ZnO-NPs，并确定这些纳米颗粒对甘蓝（）和安第斯羽扇豆（甜）作物生长促进的影响。通过可见分光光度法、尺寸分布（动态光散射）、扫描电子显微镜（SEM）和透射电子显微镜（TEM）对纳米颗粒进行分析。将纳米颗粒浓度溶液施用于甘蓝，将270和540 ppm的ZnO_MnO-NPs溶液以及270和540 ppm的FeO_ZnO-NPs溶液施用于安第斯羽扇豆。两种植物都使用了锌，以利用其对植物生长的有益特性。在温室条件下生长的甘蓝或安第斯羽扇豆植物营养生长的物候期进行叶面纳米颗粒喷雾。ZnO的纳米颗粒直径为9.5 nm，FeO为7.8 nm，MnO为10.5 nm，这有利于植物气孔对纳米颗粒的吸附。在安第斯羽扇豆中，用270 ppm的铁和锌处理表明，株高增加6%，根大小增加19%，叶绿素含量指数增加3.5%，叶面积增加300%，而用540 ppm铁和锌处理在任何变量上均未产生明显增加。在甘蓝中，270 ppm浓度的ZnO_MnO-NPs表明，根大小增加10.3%，干生物量增加55.1%，叶绿素含量增加7.1%，叶面积增加25.6%。与用蒸馏水喷雾的对照相比，540 ppm浓度处理的甘蓝植株根大小增加1.3%，叶绿素含量增加1.8%。因此，270 ppm的纳米肥料喷雾施用表明两种植物的生长都有显著改善。
