Overcoming Dormancy in Seeds of Dialium guianense (Aubl.) Sandwitch (Fabaceae – Caesalpinioideae)

• DOI: 10.11648/j.jps.20160405.16
• Publication Date: 2016-10-28
• Authors: Pedro Henrique Ol...; Dênmora Gomes de ...; Marcos André Pied...; Luiz Fernandes Si...; Emanoel Rodrigues...; Denise Siqueira P...; Glauco André dos ...; Cândido Ferreira ...; Juscelino Gonçalv...; Josilene do Carmo...; Lenilson Ferreira...
• Keywords: Sodium hypochlorite; Sandpaper; Scarification; Distilled water

This study has aimed to test different methods of overcoming dormancy, accelerating and standardizing the initial seedling settling determining pre-germination treatment that is more effective for species Dialium guianense (Aubl.) Sandwitch. The seeds were submitted following treatments: Control (T1) – only asepsis was done by immersion in sodium hypochlorite (2 %) 3 minutes; sulfuric acid (98 % p.a.) 5, 10, 15 20 minutes (T2, T3, T4 T5, respectively); mechanical chisel plow (T6) (2%) seed surface abrasion 80 sandpaper seconds, always at edge (to avoid damaging embryo) then immersed water 24 hours. have cutaneous dormancy treatments chemical means concentrated (98%) providing highest values emergence Emergence Speed Index (ESI) seedlings, as well average dry matter allocation shoot primary root.