ENDOPHYTIC BACTERIA USED AS BIOINOCULANTS IN MICROPROPAGATED BANANA SEEDLINGS

  • SOUZA G
  • SILVA D
  • NIETSCHE S
  • et al.
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Abstract

ABSTRACT The use of bio-fertilizers and microbial inoculants that promote plant growth and increased yield has been accepted as an alternative to reduce the use of chemical fertilizers. The objective of the present study was to evaluate the effect of plant growth promoting bacteria inoculation on growth and quality of micropropagated banana seedlings ‘Prata Anã’. The experimental design was completely randomized, with four replications and the treatments consisted of 24 isolates of endophytic bacteria. The isolates EB-50 (Bacillus sp.) and EB-133 (Bacillus amyloliquefaciens) characterized as diazotrophic, the EB-51 (Bacillus pumilus) indicate for inorganic phosphate solubilization and EB-55(Bacillus subtilis) and EB-40 (Bacillus sp.) indole-3-acetic acid producers have provided significant increases for length, pseudostem diameter, fresh masses and dry masses in ‘Prata Anã’ micropropagated banana seedlings.RESUMO 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’.

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SOUZA, G. L. O. D. D., SILVA, D. F. D., NIETSCHE, S., XAVIER, A. A., & PEREIRA, M. C. T. (2017). ENDOPHYTIC BACTERIA USED AS BIOINOCULANTS IN MICROPROPAGATED BANANA SEEDLINGS. Revista Brasileira de Fruticultura, 39(2). https://doi.org/10.1590/0100-29452017324

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