04289nab a2200337 i 4500003000900000005001700009008004100026040001800067072001400085072000800099072000800107100002800115100003600143100002900179100002400208100003100232100003600263100002000299100002700319245012800346500006700474520145600541520158601997650001203583650002803595650001903623650001903642650003003661773018103691856007903872BR-BrBNA20260602153105.0260602b2022    bl.qr|pooa||| 00| 00eng |  aBR-BrBNAbeng  aF02b0920  aF01  aP34  aHiguchi, Maíra Tiaki   aRibeiro, Luana Tainá Machado   aShimizu, Gabriel Danilo   aGuariz, Hugo Roldi   aRodrigues, Evandro João   aPinto, Débora Bueno Bernardo   aKoyama, Renata   aRoberto, Sergio Ruffo   aAssociation of indolebutyric acid with rhizobacteria on the viability of herbaceous minicuttings of blueberry ‘Brite Blue  a

Publicação online; 24 ref.; 5 illus.; Summaries (En, Pt)  a


ABSTRACT:   Plant regulators used alone or associated with rhizobacteria are alternatives that maximize the rhizogenic potential of cuttings that are difficult to root, such as the blueberry. Thus, the objective of this study was to investigate if concentrations of  IBA  in  talc,  associated  or  not  with  the  rhizobacteria  Azospirillum  brasilense  and  Bacillus  subtilis,  interfere  in  the  viability  of  blueberry mini cuttings, cultivar ‘Brite Blue’. The experimental design used was entirely randomized, with four repetitions. The treatments studied, designed in a bifatorial scheme (4 × 3), were concentrations of IBA (0, 500, 1,000, and 2,000 mg L-1), applied as talc, associated or not with A. brasilense and B. subtilis. A significant interaction was observed between the factors IBA and inoculation with rhizobacteria regarding the presence of callus. In relation to the isolated effect of inoculation, B. subtilis proved to be superior to the treatments with application of IBA alone, also presenting the highest percentage of sprouted minestems. There was an isolated effect of IBA doses on the number of roots per minicutting, survival, and rooted minicutting. It is concluded that the treatments with IBA and rhizobacteria, especially B. subtilis, favor the viability of the ‘Brite Blue’ minicuttings. 


Key words:       Azospirillum brasilense; Bacillus subtilis; plant growth regulator; propagation; Vaccinium sp  a


RESUMO:  Os  reguladores  vegetais  utilizados  isoladamente  ou  associados  à  rizobactérias  são  alternativas  que  maximizam  o  potencial rizogênico de estacas de difícil enraizamento, a exemplo do mirtilo. Dessa forma, o objetivo do trabalho foi investigar se concentrações de AIB em talco, associados ou não às rizobactérias Azospirillum brasilense e Bacillus subtilis, interferem na viabilidade  de  miniestacas  de  mirtilo,  cultivar  ‘Brite  Blue’.  O  delineamento  experimental  utilizado  foi  inteiramente  casualizado,  com quatro repetições. Os tratamentos estudados, delineados em esquema bifatorial (4 × 3), foram concentrações de AIB (0, 500, 1.000 e 2.000 mg L-1), aplicados na forma de talco, associadas ou não à A. brasilense e à B. subtilis. Foi observada interação significativa  entre  os  fatores AIB  e  inoculação  com  rizobactérias  quanto  à  presença  de  calo.  Em  relação  ao  efeito  isolado  da inoculação, B. subtilis mostrou-se ser superior aos tratamentos com aplicação de AIB isolado, apresentando também a maior porcentagem  de  miniestacas  brotadas.  Houve  efeito  isolado  de  doses  de  AIB  quanto  ao  número  de  raízes  por  miniestaca,  sobrevivência  e  miniestacas  enraizadas.  Conclui-se  que  os  tratamentos  com  AIB  e  rizobactérias,  em  especial  o  B.  subtilis, favorecem a viabilidade das miniestacas ‘Brite Blue’. 


Palavras-chave:      Azospirillum brasilense; Bacillus subtilis; regulador vegetal; propagação; Vaccinium sp  aMIRTILO  aÁCIDO INDOLBUTÍRICO  aINOCULAÇÃO  aRIZOBACTÉRIA  aPROPAGAÇÃO VEGETATIVA0 04656dRecife-PE Universidade Federal Rural de Pernambuco 2006o2026-2369tRevista Brasileira de Ciências Agrárias (Brazil)x1981-1160gv. 17(3) p. 1-6; (2022)wBR2026001529  uhttp://www.agraria.pro.br/ojs32/index.php/RBCA/article/view/v17i3a337/1470