SciELO - Scientific Electronic Library Online

 
vol.32 issue6Effect of the growth regulators IBA and ANA on the rooting of minicuttings of Eucalyptus grandis x Eucalyptus urophylla clonesOrganic residues used as degraded subsoil reconditioner nd their effect on soil microbial activity and soil fertility in barbatimão cultivation author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Revista Árvore

Print version ISSN 0100-6762

Abstract

MARTINS, Cibele Chalita  and  NAKAGAWA, João. Germinação de sementes de Stryphnodendron adstringens (Mart.) Coville de diferentes origens submetidas a tratamentos para superação de dormênciaGermination of Stryphnodendron adstringens (Mart.) Coville seeds from different sources submitted to dormancy breaking treatments. Rev. Árvore [online]. 2008, vol.32, n.6, pp. 1059-1067. ISSN 0100-6762.  http://dx.doi.org/10.1590/S0100-67622008000600011.

Seeds from different sources may present variation in dormancy intensity, responding differently to treatments and making it difficult to select the best dormancy breaking method. This work aimed to identify methods for breaking dormancy and promoting germination of Stryphnodendron adstringens seeds from differents origins. Seeds of Stryphnodendron adstringens were harvested at seven cerrado fragments in the Botucatu region (SP) and were submitted to the following treatments for breaking dormancy: control, mechanical scarification (with sand paper 220), boiling water for 20 minutes and acid scarification (with H2 SO4 95%) for 40, 60 and 80 minutes. Seeds were evaluated by water content, germination test, seedling length, and conductivity test. Scarification with sulphuric acid for 60 minutes was the most efficient treatment for breaking dormancy, accelerating and increasing germination percentage and resulting in seedlings with large size, for all the seeds from different origins.

Keywords : Hard seed; medicinal plant; forest seed.

        · abstract in Portuguese     · text in Portuguese     · pdf in Portuguese