全球范围内,盐度是农业中一种重要的非生物胁迫。它引起植物的氧化应激和营养失衡,导致作物生产力低下。施用硅(Si)可以改善大量营养素的摄取。另一方面,使用生物炭作为土壤改良剂也可以降低盐分应力,由于其高孔隙率,阳离子交换能力,和保水能力。这就是为什么当前的实验以新颖的方式进行,以探索基于硅纳米颗粒的生物炭(Si-BC)对在受盐影响的土壤上栽培的小麦的影响。有3个水平的Si-BC,即,控件(0),1%Si-BC1和2.5%Si-BC2在完全随机设计后在0和200mMNaCl下重复3次。结果表明,2.5%Si-BC2处理在芽和根长的增强方面表现明显更好,芽和根的鲜重,芽和根干重,叶子的数量,耕种器的数量,小穗数量,穗长,在无胁迫和盐度胁迫(200mMNaCl)下,与对照组相比,增加鲜重和干重。叶绿素a显著增强(~18%),叶绿素b(~22%),总叶绿素(~20%),类胡萝卜素(~60%),相对水含量(〜58%)也表明在200mMNaCl下处理2.5%Si-BC2比对照的有效性。总之,处理2.5%Si-BC2可以通过调节抗氧化剂和改善N来潜在地减轻小麦的盐度胁迫。K浓度,和气体交换属性,同时降低Na和Cl浓度和电解质泄漏。建议在田间进行更多的调查,以宣布处理2.5%Si-BC2,作为在可变气候条件下减轻不同作物盐分胁迫的最佳改良法。
Globally, salinity is an important abiotic stress in agriculture. It induced oxidative stress and nutritional imbalance in plants, resulting in poor crop productivity. Applying silicon (Si) can improve the uptake of macronutrients. On the other hand, using biochar as a soil amendment can also decrease salinity stress due to its high porosity, cation exchange capacity, and water-holding capacity. That\'s why the current experiment was conducted with novelty to explore the impact of silicon nanoparticle-based biochar (Si-BC) on wheat cultivated on salt-affected soil. There were 3 levels of Si-BC, i.e., control (0), 1% Si-BC1, and 2.5% Si-BC2 applied in 3 replicates under 0 and 200 mM NaCl following a completely randomized design. Results showed that treatment 2.5% Si-BC2 performed significantly better for the enhancement in shoot and root length, shoot and root fresh weight, shoot and root dry weight, number of leaves, number of tillers, number of spikelets, spike length, spike fresh and dry weight compared to control under no stress and salinity stress (200 mM NaCl). A significant enhancement in chlorophyll a (~ 18%), chlorophyll b (~ 22%), total chlorophyll (~ 20%), carotenoid (~ 60%), relative water contents (~ 58%) also signified the effectiveness of treatment 2.5% Si-BC2 than control under 200 mM NaCl. In conclusion, treatment 2.5% Si-BC2 can potentially mitigate the salinity stress in wheat by regulating antioxidants and improving N, K concentration, and gas exchange attributes while decreasing Na and Cl concentration and electrolyte leakage. More investigations at the field level are recommended for the declaration of treatment 2.5% Si-BC2 as the best amendment for alleviating salinity stress in different crops under variable climatic conditions.