Seed germination of three species of Fabaceae typical of seasonally dry forest

• Autor(a) principal: Arruda, Daniel Meira
• Data de Publicação: 2015
• Outros Autores: Brandão, Diego Oliveira, Veloso, Maria das Dores Magalhães, Nunes, Yule Roberta Ferreira
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Pesquisa Florestal Brasileira (Online)
• Texto Completo: https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/672
• topic: Seed dormancy; Deciduous forest; Tropical dry forest; Seed predation; Propagation; Restoration; Dormência de sementes; Floresta decídua; Mata seca; Predação de sementes; Propagação; Restauração

This study evaluates seeds germination of Anadenanthera colubrina, Acacia polyphylla and Bauhinia cheilantha, typical species of deciduous forests. Seeds were submitted to pre-germination treatments and attack of native insects. The seeds of each species were grouped in: seeds scarified with sandpaper; seeds immersed in water heated to 70 °C, seeds with signs of attack by herbivore insects and the control group. The largest proportion of germinated seeds occurred in the first week of incubation and germination peak, ranged from first to third day. All groups of A. polyphylla and B.cheilantha showed high germination rate (> 90%), being reduced only when seeds were attacked by insects (< 25%). Mechanic scarification was efficient in A. polyphylla by enhancing germination to maximum (100%) and accelerating germination. A. colubrina showed no difference among groups, and germination rate was lower (< 50%), which was attributed to infestation by fungi, commonly reported in this species and apparently independent of usual hygiene procedures. Finally, except the fungi infestation in A. colubrina, evaluated species were independent of pre-germination treatment to obtain a high rate of germination.