以单纯芽孢杆菌为基础的接种剂对巴西大田玉米和大豆种子处理效果的定量研究

IF 1.1 4区 农林科学 Q3 AGRONOMY Journal of Seed Science Pub Date : 2022-01-01 DOI:10.1590/2317-1545v44263329
Marina Senger, Eloir Moresco, Marisa Dalbosco, R. Santin, P. Inderbitzin, E. Barrocas
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引用次数: 2

摘要

摘要:在气候变化和土壤条件恶化的情况下,农业促生菌已成为提高作物生产性能和生产力的重要工具。单纯芽孢杆菌是最近在巴西开发的一种促进玉米和大豆生长的活性成分。本研究比较了三种接种剂产品中单纯白弧菌菌落形成单位的量化方法,并评价了四种不同浓度单纯白弧菌接种剂对玉米和大豆根、茎干重、归一化植被指数(NDVI)和产量的影响。每种作物在四个不同地点进行了田间试验,分别在南马托格罗索州和帕拉纳州进行玉米试验,在南马托格罗索州、米纳斯吉拉斯州和帕拉纳州进行大豆试验。将单纯螺旋体的性能与巴西固氮螺旋体为基础的接种剂、聚合物种子处理和未经处理的对照进行了比较。结果表明,接种剂中微生物定量的官方MAPA方法回收率最高。然而,所有三种评估的定量方法每毫升(108 CFU.mL-1)回收超过1亿个菌落形成单位。田间试验结果表明,单纯双歧杆菌接种剂对玉米和大豆产量的提高与巴西双歧杆菌产品相同或更高,聚合物种子处理对产量没有影响。处理对根、茎重和NDVI的影响不一致。本研究表明,单纯弧菌可以用三种不同的方法进行量化,并且可以提高玉米和大豆的产量。单纯芽孢杆菌为基础的接种剂在巴西具有广泛应用的潜力。
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Methods to quantify Bacillus simplex-based inoculant and its effect as a seed treatment on field-grown corn and soybean in Brazil
Abstract: Growth-promoting bacteria in agriculture have become an important tool to improve crop performance and productivity in the face of climate change and deteriorating soil conditions. Bacillus simplex is a recently developed active ingredient for the growth promotion of corn and soybean in Brazil. This study compared three methods to quantify B. simplex colony-forming units in the inoculant product and evaluated the treatment effects of four different concentrations of a B. simplex-based inoculant on corn and soybean root and shoot dry weight, the Normalized Difference Vegetation Index (NDVI), and yield. Field trials were performed at four different locations for each crop, in Mato Grosso do Sul and Paraná for corn, and in Mato Grosso do Sul, Minas Gerais, and Paraná for soybean. The performance of B. simplex was compared to an Azospirillum brasilense-based inoculant, a polymer seed treatment, and untreated controls. The results showed that the official MAPA method for quantifying microbes in inoculants recovered the highest number of B. simplex colonies. However, all three evaluated quantification methods recovered over 100 million colony-forming units per mL (108 CFU.mL-1). The field results showed that the B. simplex inoculant generally increased corn and soybean yields as much or more as the A. brasilense product and that the polymer seed treatment had no impact on yield. The treatment effect on root and shoot weight, and NDVI, was inconsistent. This research shows that B. simplex is quantifiable with three different methods and that it can improve yield in corn and soy. The Bacillus simplex-based inoculant has the potential to become widely used in Brazil.
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来源期刊
Journal of Seed Science
Journal of Seed Science Agricultural and Biological Sciences-Agronomy and Crop Science
CiteScore
2.00
自引率
30.00%
发文量
28
审稿时长
12 weeks
期刊介绍: From 2017 the Journal of Seed Science (JSS) will circulate online version only. Original scientific studies and communications, not yet published or submitted to another journal for publication and written in Portuguese or English, will be accepted for publication. For manuscripts submitted in English, the authors should provide an adequated version. The SCIENTIFIC COMMUNICATION is a category of scientific manuscript which describes a technique, an equipment, new species or observations and surveys of limited results. It has the same scientific rigor as the “Scientific Articles” and the same value as a publication. The classification of a manuscript as a SCIENTIFIC COMMUNICATION is based on its content and scientific merit but it can be a preliminary study, simple and not definitive on a certain subject, with publication justified by its uniqueness and contribution to the area. The Editorial Board of the JSS may invite leading authors of recognized reputation to compose specific Review Articles covering topics of their specialization that will convey to the scientific community the state-of-the-art knowledge related to the specific theme.
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