Inoculation and co-inoculation with multifunctional rhizobacteria for the initial development of soybean

ABSTRACT Soybean inoculation and co-inoculation with multifunctional rhizobacteria is a sustainable alternative that may contribute to plant growth and increased agricultural production, making the product more competitive, as well as reducing costs for the producer. This study aimed to evaluate the effect of inoculation and co-inoculation with multifunctional Serratia sp. and Bacillus sp. rhizobacteria on the early development of soybean. A completely randomized experimental design was used, with four treatments and ten replicates, totaling 40 experimental plots. The treatments consisted of the microbiolization of soybean seeds and a control treatment: BRM 32114 (Serratia sp.) isolate; BRM 63573 (Bacillus sp.) isolate (formerly named 1301); co-inoculation with BRM 32114 + BRM 63573; and control (without microbiolization). BRM 32114 and BRM 63753, both isolated and combined, were eficient to improve the initial development of soybean seedlings, providing significant effects for most of the analyzed variables (length, total surface, root volume and root, shoot and total biomass), when compared to the control treatment.

摘要：利用多功能根际细菌（rhizobacteria）对大豆进行单接种与共接种，是一种可持续的替代方案，既可促进植株生长、提升农业产量，增强大豆产品的市场竞争力，同时还可降低生产者的生产成本。本研究旨在评估多功能沙雷氏菌属（Serratia sp.）与芽孢杆菌属（Bacillus sp.）根际细菌单接种及共接种对大豆早期生长发育的影响。本实验采用完全随机试验设计，设置4个处理组与10次重复，总计40个试验小区。试验处理共分为4类：大豆种子微生物接种处理组（接种BRM 32114，沙雷氏菌属菌株）、接种BRM 63573（芽孢杆菌属菌株，原编号1301）组、BRM 32114与BRM 63573共接种组，以及空白对照组（未进行微生物接种处理）。相较于空白对照组，BRM 32114与BRM 63753无论是单独接种还是联合接种，均可有效促进大豆幼苗的早期生长发育，对多数检测指标（幼苗长度、总表面积、根体积以及根生物量、地上部生物量与总生物量）均产生了显著影响。