Dola Dipanjoli Baral, Mannan Md Abdul, Sarker Umakanta, Mamun Md Abdullah Al, Islam Tofazzal, Ercisli Sezai, Saleem Muhammad Hamzah, Ali Baber, Pop Oana Lelia, Marc Romina Alina
Department of Agronomy, Faculty of Agriculture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh.
Department of Genetics and Plant Breeding, Faculty of Agriculture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh.
Front Plant Sci. 2022 Sep 9;13:992535. doi: 10.3389/fpls.2022.992535. eCollection 2022.
Drought is one of the most destructive abiotic stresses that impact the growth, physiology, yield, and nutritional quality of seeds of crop plants. In modern agriculture, the use of nanoparticles can be beneficial due to their large surface area and higher potentiality to enter into the plant leaf during foliar application. This study aims to evaluate the effects of foliar spray containing varying doses (0, 100, and 200 ppm) of the nano-iron (FeO) on the growth, physiology, yield, and seed nutritional quality of soybean under drought (40% of field capacity, FC) and well-watered (80% of FC) conditions. Leaf water status, chlorophyll content of leaves, the height of the plant, fresh leaf weight, fresh stem weight, fresh petiole weight, total dry weight, seed yield, and protein and oil content in soybean seeds were found to be suppressed by the applied drought stress. Under both drought (40% of FC) and controlled well-watered (80% of FC) conditions, the foliar application of nano-iron substantially improved the growth, physiology, yield, and quality of soybean seeds. The nanoparticles at 200 ppm increased soybean seed yield by 40.12 and 32.60% in drought and well-watered conditions, respectively, compared to the untreated plants. Furthermore, nano-iron increased the oil content of soybean seeds by 10.14 and 7.87% under drought and well-watered conditions, respectively, compared to the untreated control. Our results indicate that the application of nano-iron improved drought tolerance, yield, and seed quality of soybean, so exogenous foliar sprays of 200 ppm FeO were more effective than the other treatments in enhancing drought tolerance and can be utilized to reduce losses caused by drought stress in soybean-growing areas.
干旱是最具破坏性的非生物胁迫之一，会影响作物种子的生长、生理、产量和营养品质。在现代农业中，由于纳米颗粒具有较大的表面积以及在叶面喷施时进入植物叶片的潜力更高，因此其使用可能有益。本研究旨在评估含有不同剂量（0、100和200 ppm）纳米铁（FeO）的叶面喷施对干旱（田间持水量的40%，FC）和充分浇水（FC的80%）条件下大豆生长、生理、产量和种子营养品质的影响。发现施加的干旱胁迫抑制了叶片水分状况、叶片叶绿素含量、植株高度、鲜叶重量、鲜茎重量、鲜叶柄重量、总干重、种子产量以及大豆种子中的蛋白质和油含量。在干旱（FC的40%）和对照充分浇水（FC的80%）条件下，叶面喷施纳米铁均显著改善了大豆种子的生长、生理、产量和品质。与未处理植株相比，200 ppm的纳米颗粒在干旱和充分浇水条件下分别使大豆种子产量提高了40.12%和32.60%。此外，与未处理对照相比，纳米铁在干旱和充分浇水条件下分别使大豆种子的油含量提高了10.14%和7.87%。我们的结果表明，纳米铁的施用提高了大豆的耐旱性、产量和种子品质，因此200 ppm FeO的外源叶面喷施在增强耐旱性方面比其他处理更有效，可用于减少大豆种植区干旱胁迫造成的损失。
