Instituto Federal Farroupilha - IFFar, Panambi, RS, Brasil.
Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil.
Braz J Biol. 2024 May 31;84:e281973. doi: 10.1590/1519-6984.281973. eCollection 2024.
Agricultural management using technologies that help farmers increase productivity and reduce production costs must be promoted to ensure agricultural sustainability. The objective of the study was to achieve the pH effect of growth solution, chemical treatment, use of osmoprotector additive and mineral nitrate presence, on the activity of growth promoting bacteria, Azospirillum brasilense, and its effects on the physiological quality of seeds and wheat seedling growth. The first experiment evaluated the physiological quality of seeds and the second experiment was divided into four, evaluating the growth of wheat seedling in a hydroponic system. The experiments were prolonged in a very randomized design, with four replications. The physiological quality of the seeds was evaluated by germination tests, first germination count, length of the shoot and root and dry mass of the shoot and root. Initial growth was evaluated by quantifying the dry mass of the leaf shoot and root and the root system intervals. The pH of the solution and the presence of nitrogen did not influence the effects of inoculation of the A. brasilense bacteria. With the use of chemical treatment and osmoprotective additive, A. brasilense had no effect on the growth of wheat seedlings.
必须推广有助于农民提高生产力和降低生产成本的农业管理技术，以确保农业的可持续性。本研究的目的是实现生长溶液、化学处理、使用渗透调节剂添加剂和硝酸盐存在的 pH 效应，以提高生长促进细菌巴西固氮螺菌的活性，并对种子的生理质量和小麦幼苗生长产生影响。第一个实验评估了种子的生理质量，第二个实验分为四个部分，评估了水培系统中小麦幼苗的生长。实验采用完全随机设计，重复四次。通过发芽试验、第一次发芽计数、芽和根的长度以及芽和根的干重来评估种子的生理质量。通过量化叶芽和根的干重以及根系间隔来评估初始生长。溶液的 pH 值和氮的存在并不影响巴西固氮螺菌的接种效果。使用化学处理和渗透调节剂时，巴西固氮螺菌对小麦幼苗的生长没有影响。
