04110nab a2200301 i 4500003000900000005001700009008004100026040001800067072000800085100003800093100002800131100002900159100004100188100003900229100002000268245007300288500005700361520140400418520161801822650001403440650001403454650002803468650001703496773018903513856007903702942000803781999001903789BR-BrBNA20260515161422.0260515b2021    bl.qr|pooa||| 00| 0 eng |  aBR-BrBNAbeng  aK10  aSilva, Luana Cristielle Araújo   aSantos, Gleica Candido   aPereira, Israel Marinho   aSilva, Michele Aparecida Pereira da   aOliveira, Marcio Leles Romarco de   aTiton, Miranda   aStrategies to transplant  Fabaceae species from natural regeneration  a

Publicação online; 28 ref.; Summaries (En, Pt)  a


ABSTRACT:     The objective of this study was to test the effect of shading levels and leaf reduction intensities on the survival and growth of Copaifera langsdorffii Guillem. ex Benth., Copaifera langsdorffii Desf. and Hymenaea courbaril L. seedlings rescued from natural regeneration. Three experiments were conducted in a completely randomized design with split-plots, in which four shading composed the plots (0 or full sun; 30; 50; and 70%) and three leaf reductions intensities composed the subplots (0; 50; and 100%). General average survival after six months from the rescue was 47.6% for C. tomentosum, 44.6% for H. courbariland 21.4% for C. langsdorffii. Considering the height, only C. tomentosum demonstrated a significant effect of leaf reduction and shading, with total or partial maintenance of leaves (0% or 50% of leaf reduction) and the when under up to 50% shading providing a greater increment. Leaf reduction is not necessary for rescuing the seedlings from H. courbaril and C. langsdorffii, whereas the leaf reduction of 50% intensity is advised to enhance the survival of C. tomentosum species. As for shading, 50% is the most suitable level for acclimatization of H. courbaril and C. tomentosum seedlings while for C. langsdorffii the level is 70%.  


Key words:      Copaifera langsdorffii; Centrolobium tomentosum; flora rescue; Hymenaea courbaril; mitigation measures  a


RESUMO:    Este  trabalho  teve  como  objetivo  avaliar  o  efeito  de  diferentes  sombreamentos  e  reduções  da  lâmina  foliar  na  sobrevivência e crescimento de mudas das espécies Copaifera langsdorffii Guillem. ex Benth., Copaifera langsdorffii Desf. e Hymenaea courbaril L.  provenientes do resgate da regeneração natural. Três experimentos foram conduzidos em delineamento inteiramente casualizado, em parcelas subdivididas, cujas parcelas foram quatro níveis de sombreamento (0 ou pleno sol, 30, 50 e 70 %) e as subparcelas três intensidades de redução foliar (0, 50 e 100 %). A sobrevivência média geral após seis meses do resgate foi de 47,6 % para a espécie C. tomentosum, 44,6 % para H. courbaril e 21,4 % para C. langsdorffii. Para a altura, apenas C. tomentosum apresentou efeito significativo da redução foliar e do sombreamento, sendo que a manutenção total ou parcial das folhas (0 % ou 50 % de redução foliar) e o acondicionamento sob até 50 % de sombra proporcionaram maior incremento. Para o resgate de plantas jovens de H. courbaril e C. langsdorffii não há necessidade de realizar a redução foliar, já para a espécie C. tomentosum recomenda-se a redução foliar de 50 % de intensidade, visando potencializar a sobrevivência. Quanto ao sombreamento, 50 % é o nível mais indicado para aclimatação de mudas de H. courbaril e C. tomentosum, e 70 % para a espécie C. langsdorffii..  


Palavras-chave:      Copaifera langsdorffii; Centrolobium tomentosum; salvamento da flora; Hymenaea courbaril; medidas mitigadoras  aCOPAÍBA  aARARIBÁ  aREGENERAÇÃO NATURAL  aSILVICULTURA0 046569361971dRecife-PE Universidade Federal Rural de Pernambuco 2006o2026-1977tRevista Brasileira de Ciências Agrárias (Brazil)x1981-1160gv. 16(1) p. 1-6; (2021)wBR2026000596  uhttp://www.agraria.pro.br/ojs32/index.php/RBCA/article/view/v16i1a7897/165  cANA  c341802d341802