Métodos de superação de dormência de sementes de barbatimão - DOI: 10.4025/actasciagron.v30i3.3548

Cibele Chalita Martins; Armando Tadeo Rodriguez da Camara; Carla Gomes Machado; João Nakagawa

doi:10.4025/actasciagron.v30i3.3548

Methods of breaking dormancy for seeds of Stryphnodendron - DOI: 10.4025/actasciagron.v30i3.3548

Authors

Cibele Chalita Martins FCA/UNESP Author
Armando Tadeo Rodriguez da Camara FCA/UNESP Author
Carla Gomes Machado FCA/UNESP Author
João Nakagawa FCA/UNESP Author

DOI:

https://doi.org/10.4025/actasciagron.v30i3.3548

Keywords:

Stryphnodendron adstringens, Stryphnodendron polyphyllum, germination, hard seeds

Abstract

The aim of this research was to identify methods for breaking dormancy and promoting germination of Stryphnodendron adstringens and S. polyphyllum seeds. Seeds of both species were submitted to the following treatments for breaking dormancy: control; mechanical scarification (sandpaper number 220); hot water (initial temperature of 87°C) for 5 and 15 minutes; chemical scarification with H₂SO₄ (95%) for 30, 45, 60, 75, 90 and 105 minutes; thermal shock 1 (0°C and 50%RH for 1h and thereafter 10 minutes into water Ti=85°C, Tf=57°C); thermic shock 2 (40°C and 40% RH for 6h and thereafter 10 minutes into water, Ti=0°C, Tf=3°C); thermal shock 3 (40°C and 40% RH for 6h and thereafter 10 minutes into water, Ti=25°C, Tf=25°C). We concluded that seeds belonging to same genus but from different species answered differently to some treatments for breaking dormancy. Chemical scarification with H₂SO₄ (45 minutes) and mechanical scarification with sandpaper are methods that can be employed with efficiency to break dormancy and promote germination for both species.

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Author Biography

Cibele Chalita Martins, FCA/UNESP

Possui graduação em Engenharia Agronômica (1987) e mestrado em Agronomia (1993) na área de Produção e Tecnologia de Sementes, ambos pela Universidade Estadual Paulista Júlio de Mesquita Filho- Campus de Jaboticabal, doutorado em Sementes (Agricultura) pela Escola Superior de Agricultura Luiz de Queiroz (1996). Exerceu o cargo de pesquisadora científica na área de Sementes de Plantas Forrageiras no Instituto de Zootecnia (1994-1996). Desenvolveu trabalhos sobre sementes de palmiteiros pelo Programa Jovem Pesquisador em Centro Emergente de Pesquisa da FAPESP junto ao Departamento de Produção Vegetal da Universidade Estadual Paulista Júlio de Mesquita Filho- Campus de Botucatu de 1997 a 2001. Desde 2002 é professora de Produção e Tecnologia de Sementes da Universidade Estadual Paulista Júlio de Mesquita Filho- Campus de Botucatu ministrando aulas para os cursos de Agronomia e Engenharia Florestal. Atualmente ocupa o cargo de Professor Substituto. Tem experiência na área de Agronomia, com ênfase em Análise, Produção e Beneficiamento de Sementes e realiza pesquisas com sementes de espécies agrícolas, olerícolas, florestais e forrageiras. Currículo Lattes

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Published

2008-05-27

Issue

Vol. 30 No. 3 (2008)

Section

Crop Production

License

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I Declare that current article is original and has not been submitted for publication, in part or in whole, to any other national or international journal.

The copyrights belong exclusively to the authors. Published content is licensed under Creative Commons Attribution 4.0 (CC BY 4.0) guidelines, which allows sharing (copy and distribution of the material in any medium or format) and adaptation (remix, transform, and build upon the material) for any purpose, even commercially, under the terms of attribution.

How to Cite

Martins, C. C., Camara, A. T. R. da, Machado, C. G., & Nakagawa, J. (2008). Methods of breaking dormancy for seeds of Stryphnodendron - DOI: 10.4025/actasciagron.v30i3.3548. Acta Scientiarum. Agronomy, 30(3), 381-385. https://doi.org/10.4025/actasciagron.v30i3.3548