Caracterização e influência de rizóbios isolados de alfafa na germinação e desenvolvimento inicial de plântulas de arroz

Stroschein, Marcos Roberto Dobler; Sá, Enílson Luiz Saccol de; Machado, Rafael Goulart; Cabral, Thaís de Lima; Bruxel, Manuela; Fontoura, Rogério Chimanski da

doi:10.1590/s0103-84782011001000010

Cited by 9 publications

(4 citation statements)

References 17 publications

(15 reference statements)

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“…: no significant differences importance for increasing the competitiveness of the plants under study, under field conditions. Other authors also observed stimuli in the initial establishment phase of plants inoculated with rhizobia (Vargas et al, 2009;Stroschein et al, 2011;Tan et al, 2014), which is important interaction on growth and early crop development.…”

Section: Discussionmentioning

confidence: 88%

Rhizobia Symbionts of Legume Forages Native to South Brazil as Promoters of Cultivated Grass Growing

Machado¹,

S²,

Hahn³

et al. 2016

IJAB

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The aim of this study was to evaluate the effect of previously selected rhizobia on the yield of sudan grass, millet, aries grass and sorghum forage. The rhizobia studied: UFRGS Om57; UFRGS Om59 and UFRGS Om148, obtained from the collection of cultures of UFRGS Soil Microbiology Laboratory, the isolated adesmia EEL46210, donated by Epagri, and SEMIA929 and SEMIA6437 strains, released by the Ministry of Agriculture, Livestock and Food Supply (MAPA) for the production of inoculants for Ornithopus micrantus and Adesmia latifolia. In the experiments with each species of plant, in addition to the inoculated treatments, two control treatments without inoculation were conducted, one with the adding of nitrogen N dose equivalent to 100 kg N.ha -1 and the other with a dose equivalent to 50 kg N.ha -1. The study was arranged in a completely randomized design and lasted 45 days. The isolated UFGRS Os57, UFRGS Om148, EEL46.210, SEMIA929 and SEMIA6437 stimulate root dry mass of sudan grass. Isolated UFRGS Om57 induces higher plant height compared to Control N -at 15 and 30 days after emergence. In millet, the SEMIA 929 strain increased the shoot and root dry mass, height at 15 days, and the Relative Efficiency Ratio (RER%) is more than 150%. The inoculation with UFRGS Om57 isolate stimulates sorghum shoot and root dry mass. For this treatment the RER% is 179%. There were genotypic differences among isolates of this study and the strains currently recommended for composition of commercial inoculants of Ornithopus micrantus and Adesmia latifolia.

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Section: Discussionmentioning

confidence: 88%

Rhizobia Symbionts of Legume Forages Native to South Brazil as Promoters of Cultivated Grass Growing

Machado¹,

S²,

Hahn³

et al. 2016

IJAB

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“…At the last reading the control treatment was not in the same vegetative stage as the others due to its later initial development. According to Stroschein et al (2011), evaluating the characterization and influence of rhizobia isolated from alfalfa on the germination and initial development of rice seedlings, they found that all rice seeds inoculated with rhizobia showed an initial increase in the percentage of twinning compared to the control treatment, in addition to increasing the twinning speed index of the seeds.…”

Section: Resultsmentioning

confidence: 99%

Coinoculation of diazotrophic bacteria in upland rice, cultivar BRS Esmeralda

Guimarães¹,

Ormay²

2023

A Look at Development

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This study aimed to evaluate the efficiency of associative bacteria inoculation and rhizobia coinoculation in upland rice. The experiment was conducted in a greenhouse. The experiment was conducted in a completely randomized design, containing seven treatments: commercial inoculant (CI), coinoculation with four rhizobia strains: MT16, MT23, MT08, MT15 and two controls (nitrogen - 50 mg dm-3 of nitrogen in the form of urea, and absolute without nitrogen and without inoculation), with 5 replications, totaling 35 experimental units.

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“…Por exemplo, sementes de Mimosa tenuiflora inoculadas com diferentes rizóbios pode apresentar aumento no IVG (índice de velocidade de germinação), no comprimento de raízes e na massa seca de plântulas (SANTOS et al, 2017). Em arroz, a inoculação de sementes com os rizóbios Sinorhizobium e Rhizobium elevou o IVG de plântulas (STROSCHEIN et al, 2011;SOUZA 2017).…”

Section: Fundamentação Teóricaunclassified

Sobrevivência De Rizóbio Em Sementes De Feijão-Caupi Tratadas Com Fungicida E Inoculante Formulado Com Polímero Goma Xantana

Reis¹,

Gomes²,

Farias³

et al. 2020

Sociedade 5.0: Educação,ciência,tecnologia E Amor

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As bactérias fixadoras de nitrogênio promovem benefícios na produção vegetal, em especial na produtividade de leguminosas, tais como o feijão caupi. Apesar de resultados promissores dos inoculantes agrícolas, diversos fatores influenciam a eficiência dessa tecnologia. Por exemplo, o tratamento com fungicida associado ao inoculante pode reduzir a sobrevivência de rizóbios nas sementes. O objetivo do trabalho foi avaliar a sobrevivência de um rizóbio em sementes de feijão-caupi tratadas com fungicida carbendazin e com inoculantes líquidos formulados com goma xantana como veículo, em diferentes concentrações e períodos de armazenamento das sementes. Sementes de feijãocaupi cv. BRS Aracê foram inoculados com uma estirpe de Bradyrhizobium sp. O polímero goma xantana foi formulado em dez concentrações para uso nas formulações. Uma vez obtidas as formulações de inoculantes, estas foram associadas ao fungicida carbendazim na dose recomendada para o tratamento de sementes. A sobrevivência da estirpe do rizóbio, em cada concentração, foi avaliada aos 0, 1, 2, 3, 4, 12, 24, 96, 192 e 768 h de armazenamento das sementes tratadas com esses produtos. O número de células viáveis foi obtido pela contagem das unidades formadoras de colônias, pelo método das diluições seriadas. A partir da diluição 10 -1 , alíquota de 1.0 mL de cada formulação foi diluída sucessivamente até 10 -9 . O polímero de goma Xantana, na concentração de 0.75 e 2.0 g L -1 , promoveu boa viabilidade celular, porém não houve padrão de crescimento no número de células viáveis do microrganismo

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Caracterização e influência de rizóbios isolados de alfafa na germinação e desenvolvimento inicial de plântulas de arroz

Abstract: Caracterização e influência de rizóbios isolados de alfafa na germinação e desenvolvimento inicial de plântulas de arrozCharacterization and influence of alfafa rhizobia on germination and early growth of rice seedling

Cited by 9 publications

References 17 publications

Rhizobia Symbionts of Legume Forages Native to South Brazil as Promoters of Cultivated Grass Growing

Rhizobia Symbionts of Legume Forages Native to South Brazil as Promoters of Cultivated Grass Growing

Coinoculation of diazotrophic bacteria in upland rice, cultivar BRS Esmeralda

Sobrevivência De Rizóbio Em Sementes De Feijão-Caupi Tratadas Com Fungicida E Inoculante Formulado Com Polímero Goma Xantana

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