BACTÉRIAS ENDOFÍTICAS COMO BIOINOCULANTES PARA MUDAS MICROPROPAGADAS DE BANANEIRA

A utilização de biofertilizantes ou inoculantes microbianos capazes de promover o crescimento e incrementar a produtividade das plantas têm sido aceita como alternativa a redução do uso de adubos químicos. Diante do exposto objetivou-se avaliar o o crescimento e qualidade de mudas micropropagadas de bananeira ‘Prata Anã’ após a bioinoculação de bacterias endofíticas promotoras de crescimento. O delineamento experimental adotado foi inteiramente casualizado, com três repetições, e os tratamentos foram compostos por 24 isolados de bactérias endofíticas. Os isolados EB-50 ( Bacillussp.), e EB-133 (Bacillus amyloliquefaciens) caracterizados como fixadores biológicos de nitrogênio, o EB-51 (Bacillus pumilus) solubilizador de fosfato inorgânico e os isolados EB-55 () e EBacillussubtilisB-40 (Bacillus sp.) sintetizadores do ácido indol-3-acético, propiciaram os maiores incrementos para o comprimento, diâmetro do pseudocaule, massas frescas e massas secas nas mudas micropropagadas de bananeira ‘Prata Anã’.

Termos para indexação
Musa sp; fixação biológica; solubilização de fosfato; AIA; bactérias promotoras do crescimento de plantas

Autoria

GLEIKA LARISSE OLIVEIRA DORASIO DE SOUZA

Master in Plant Production in Semiarid of the Universidade Estadual de Montes Claros, Rua Reinaldo Viana, 2630, Bairro Bico da Pedra, Janaúba, Minas Gerais, CEP 39440-000. E-mail: gleikalarisse@hotmail.com Universidade Estadual de Montes ClarosBrasilJanaúba, MG, Brasil Master in Plant Production in Semiarid of the Universidade Estadual de Montes Claros, Rua Reinaldo Viana, 2630, Bairro Bico da Pedra, Janaúba, Minas Gerais, CEP 39440-000. E-mail: gleikalarisse@hotmail.com

DEIVISSON FERREIRA DA SILVA

Professor of the Instituto Federal Catarinense, Rodovia BR 280, km 27, Porto Grande, Araquari, Santa Catarina, CEP 89245-000. E-mail: deivisson.silva@ifc-araquari.edu.br Instituto Federal CatarinenseBrasilAraquari, SC, Brasil Professor of the Instituto Federal Catarinense, Rodovia BR 280, km 27, Porto Grande, Araquari, Santa Catarina, CEP 89245-000. E-mail: deivisson.silva@ifc-araquari.edu.br

SILVIA NIETSCHE

Professor of the Agrarian Sciences Institute, Universidade Federal de Minas Gerais, Avenida Universitária, 1000 - Universitário,Montes Claros, Minas Gerais, CEP 39404-547. E-mail: silvia.nietsche@gmail.com Universidade Estadual de Montes ClarosBrasilMontes Claros, MG, Brasil Professor of the Agrarian Sciences Institute, Universidade Federal de Minas Gerais, Avenida Universitária, 1000 - Universitário,Montes Claros, Minas Gerais, CEP 39404-547. E-mail: silvia.nietsche@gmail.com

ADELICA APARECIDA XAVIER

Professors of the Department of Agrarian Sciences, Universidade Estadual de Montes Claros, Rua Reinaldo Viana, 2630, Bairro Bico da Pedra, Janaúba, Minas Gerais, CEP 39.440-000. E-mails: marlon.pereira@unimontes.br; adelica@unimontes.br. Universidade Estadual de Montes ClarosBrasilJanaúba, MG, Brasil Professors of the Department of Agrarian Sciences, Universidade Estadual de Montes Claros, Rua Reinaldo Viana, 2630, Bairro Bico da Pedra, Janaúba, Minas Gerais, CEP 39.440-000. E-mails: marlon.pereira@unimontes.br; adelica@unimontes.br.

MARLON CRISTIAN TOLEDO PEREIRA

SCIMAGO INSTITUTIONS RANKINGS

Figuras | Tabelas

Figuras (3)
Tabelas (2)

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FIGURE 1
Effect of inoculation of 20 isolates of diazotrophic endophytic bacteria on micropropagated ‘Prata Anã’ banana seedlings on fresh mass (a), dry mass (b), length and diameter of pseudostem (c). Vertical bars indicate the mean standard error and equal letters belong to the same group by the Scott-Knott test, at 5% probability. [Hoagland Solution 1 (absence of N) and without bacterial inoculum (SSN), Complete Hoagland Solution without bacterial inoculum (SCN)].

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FIGURE 2
Effect of the inoculation of three isolates of P solubilizing endophytic bacteria on micropropagated ‘Prata Anã’ banana seedlings in fresh mass (a), dry mass (b), length and diameter of pseudostem (c). Vertical bars indicate the mean standard error and equal letters belong to the same group by the Scott-Knott test, at 5% probability. [Hoagland solution 2 (absence of P) and without bacterial inoculum (SSN), Hoagland solution complete and without bacterial inoculum (SCN)].

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FIGURE 3
Effect of the inoculation of four isolates of endophytic IAA synthesizing bacteria on micropropagated ‘Prata Anã’ banana seedlings on fresh matter mass (a), dry mass (b), length and diameter (c). Vertical bars indicate the mean standard error and equal letters belong to the same group by the Scott-Knott test, at 5% probability. [Complete Hoagland solution without bacterial inoculum (SCN)].

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TABLE 1
Isolates of endophytic bacteria identified as nitrogen fixers, phosphorus solubilizers and producers of 3-indole acetic acid and two controls (SSN and SCN) used in the three bioinoculation assays in ‘Prata Anã’ banana micropropagated seedlings, Janaúba, Minas Gerais, Brazil.

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TABLE 2
- Nutrient contents resulting from the chemical analysis of the substrate used in the bioinoculation assays of endophytic bacteria in micropropagated seedlings of ‘Prata Anã’ banana tree, Janaúba, Minas Gerais, Brazil*.

FIGURE 1 Effect of inoculation of 20 isolates of diazotrophic endophytic bacteria on micropropagated ‘Prata Anã’ banana seedlings on fresh mass (a), dry mass (b), length and diameter of pseudostem (c). Vertical bars indicate the mean standard error and equal letters belong to the same group by the Scott-Knott test, at 5% probability. [Hoagland Solution 1 (absence of N) and without bacterial inoculum (SSN), Complete Hoagland Solution without bacterial inoculum (SCN)].

FIGURE 2 Effect of the inoculation of three isolates of P solubilizing endophytic bacteria on micropropagated ‘Prata Anã’ banana seedlings in fresh mass (a), dry mass (b), length and diameter of pseudostem (c). Vertical bars indicate the mean standard error and equal letters belong to the same group by the Scott-Knott test, at 5% probability. [Hoagland solution 2 (absence of P) and without bacterial inoculum (SSN), Hoagland solution complete and without bacterial inoculum (SCN)].

FIGURE 3 Effect of the inoculation of four isolates of endophytic IAA synthesizing bacteria on micropropagated ‘Prata Anã’ banana seedlings on fresh matter mass (a), dry mass (b), length and diameter (c). Vertical bars indicate the mean standard error and equal letters belong to the same group by the Scott-Knott test, at 5% probability. [Complete Hoagland solution without bacterial inoculum (SCN)].

TABLE 1 Isolates of endophytic bacteria identified as nitrogen fixers, phosphorus solubilizers and producers of 3-indole acetic acid and two controls (SSN and SCN) used in the three bioinoculation assays in ‘Prata Anã’ banana micropropagated seedlings, Janaúba, Minas Gerais, Brazil.

TABLE 2 - Nutrient contents resulting from the chemical analysis of the substrate used in the bioinoculation assays of endophytic bacteria in micropropagated seedlings of ‘Prata Anã’ banana tree, Janaúba, Minas Gerais, Brazil*.

^*
Analyzes carried out by the Agricultural Research Company of Minas Gerais - EPAMIG, Regional Unit from North of Minas,Nova Porteirinha – MG. 1pH in water; 2Extractor: Mehlich-1; 3Extractor: KCl 1 mol/L; 4pH SMP; 5Colorimetry. TB: Total Base; OM: Organic Matter.

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BACTÉRIAS ENDOFÍTICAS COMO BIOINOCULANTES PARA MUDAS MICROPROPAGADAS DE BANANEIRA

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[TFN0201] ^*
Analyzes carried out by the Agricultural Research Company of Minas Gerais - EPAMIG, Regional Unit from North of Minas,Nova Porteirinha – MG. 1pH in water; 2Extractor: Mehlich-1; 3Extractor: KCl 1 mol/L; 4pH SMP; 5Colorimetry. TB: Total Base; OM: Organic Matter.