Production of rice inoculated with diazotrophs marked with induced resistance to the antibiotic streptomycin

• Autor(a) principal: Guimarães, Salomão Lima
• Data de Publicação: 2013
• Outros Autores: Baldani, Vera Lucia Divan
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Revista de Ciências Agrárias (Belém. Online)
• Texto Completo: https://ajaes.ufra.edu.br/index.php/ajaes/article/view/491

The objective of this study was to evaluate the effects of inoculation with Herbaspirillum spp. and Burkholderia spp. in relation to yield components of rice. Two experiments were conducted: the first, in the greenhouse, and the second, under field conditions, with two rice cultivars (IR42 and IAC4440). In the experiment in a greenhouse, for cv. IR42, and the ZAE94 ZALIR42 strains (Herbaspirillum seropedicae), and M130 and M171 (Burkholderia spp.) Were used. In 'IAC4440: ZAE94 and Z3 (H. seropedicae), M130 and M209 (. Burkholderia spp), with four replications. As a control, non-inoculated plants were used. The bacteria were checked for resistance to the antibiotic streptomycin, and Herbaspirillum spp. showed resistance to 100 mg kg-1 streptomycin as Burkholderia spp. to 150 mg kg-1. The seed inoculation was performed by pelleting with peat containing the bacteria multiplied in the midst Dygs. Four seeds per pot, and held up a collection at the end of the cycle cultivars were planted. In the field, samples were collected according to the phenological stage of the cultivars, evaluating: population of diazotrophic bacteria in plants, dry matter, total N of shoots and grain production. In the greenhouse, in general, inoculation had a positive effect, varying with each strain and cultivar used. In the field, the most promising results pointed to the IAC4440 grow in increments of up to 54% in grain yield due to inoculation with diazotrophs.