Journal of Plant Nutrition ( IF 2.1 ) Pub Date : 2021-01-15 , DOI: 10.1080/01904167.2021.1871745 Michel Esper Neto 1 , David W. Britt 2 , Kyle Alan Jackson 2 , Carolina Fedrigo Coneglian 1 , Vitor Rodrigues Cordioli 1 , Alessandro Lucca Braccini 1 , Tadeu Takeyoshi Inoue 1 , Marcelo Augusto Batista 1
Abstract
Nanofertilizer application is becoming a sustainable alternative for plants micronutrients supply. Seed nutrient priming before seeding reduces non-target dispersion; although, applying nanofertilizer in correct concentration must be narrowly chosen to prevent germination and development issues. Here, we evaluated corn seedlings development and germination after seed priming with Mn3O4 nanoparticle (NP), Mn3O4 bulk and MnCl2. Sterile seeds were soaked for 8 hours in priming solutions of 0, 20, 40, 80 and 160 mg L−1 for each Mn sources. The seeds vigor and germination were evaluated after 7 days on germination paper. Root, shoot and total lengths were measured as well as root, shoot and total dry biomass. Compared to the control, the Mn3O4 NP and Mn3O4 bulk promoted beneficial effects. Mn3O4 NP seed-priming exhibited a concentration dependent profile in improving seedling growth, with greatest benefit around 20 mg L−1, providing higher germination, vigor, dry biomass and length than control and the other source tested. Particle size plays an important role in the reactivity of Mn3O4 NP. On the other hand, seeds primed with soluble source did not differ from the control. These findings support NP-seed priming as an alternative to delivery micronutrients.
中文翻译:
菱锰矿(Mn3O4)纳米种子引发后玉米幼苗早期生长的评估
摘要
纳米肥料的应用正在成为植物微量营养素供应的可持续替代品。播种前启动种子营养可减少非目标物质的分散;但是,必须选择正确浓度的纳米肥料以防止发芽和发育问题。在这里,我们评估了用Mn 3 O 4纳米粒子(NP),Mn 3 O 4本体和MnCl 2引发种子后玉米幼苗的发育和发芽。将无菌种子在0、20、40、80和160 mg L -1的底漆溶液中浸泡8小时每个锰源。在发芽纸上7天后评估种子的活力和发芽。测量根,芽和总长度以及根,芽和总干生物量。与对照相比,Mn 3 O 4 NP和Mn 3 O 4整体促进了有益作用。Mn 3 O 4 NP种子引发在改善幼苗生长方面表现出浓度依赖性,其最大益处约为20 mg L -1,与对照和其他测试来源相比,具有更高的发芽率,活力,干生物量和长度。粒度在Mn 3 O 4的反应性中起重要作用NP。另一方面,用可溶来源引发的种子与对照没有差异。这些发现支持NP种子引发作为输送微量营养素的替代方法。