| Registro completo |
| Provedor de dados: |
BJM
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| País: |
Brazil
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| Título: |
Rhizobacterial promotion of eucalypt rooting and growth
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| Autores: |
Teixeira,Débora A.
Alfenas,Acelino Couto
Mafia,Reginaldo Gonçalves
Ferreira,Eraclides M.
Siqueira,Leandro de
Maffia,Luiz A.
Mounteer,Ann H.
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| Data: |
2007-03-01
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| Ano: |
2007
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| Palavras-chave: |
Eucalyptus
Cloning
Mini-cutting
Cutting
Rhizobacteria
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| Resumo: |
A total of 107 rhizobacterial isolates, obtained from the rhizosphere of eucalypt clones were tested as rooting inducers of cuttings and mini-cuttings planted in substrate composed of carbonized rice husk and vermiculite (1:1). Cuttings and mini-cuttings were planted in conical plastic tubes containing treated and untreated (control) substrate and kept under intermittent mist irrigation at 26-28ºC. After 35 days, rooting percentage and dry root matter of cuttings were evaluated. Ten isolates capable of providing gains of up to 110% in root formation and up to 250% in root biomass over non-inoculated control cuttings were selected. Gains in rooting varied according to clone and isolate tested. The greatest gains were obtained for the mini-cuttings exhibiting the lowest rooting efficiency. Among the ten isolates tested, only 3918 (code R98) and MF4 (code R87), produced 3-indole-acetic acid in vitro, at concentrations of 0.7 and 0.67 µg ml-1, respectively. Significant increases in rooting and root dry matter of cuttings grown on rhizobacteria-inoculated substrate were found when compared to untreated or indole-butyric acid (IBA) treated mini-cuttings.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000100025
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| Editor: |
Sociedade Brasileira de Microbiologia
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| Relação: |
10.1590/S1517-83822007000100025
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| Formato: |
text/html
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| Fonte: |
Brazilian Journal of Microbiology v.38 n.1 2007
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| Direitos: |
info:eu-repo/semantics/openAccess
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