BREAKDOWN OF SEED DORMANCY IN Canavalia brasiliensis

Authors

  • Renato Fernandes Amabile CPAC/EMBRAPA
  • José Garcia UFG
  • João Batista Duarte UFG
  • José Carlos S. Silva CPAC/EMBRAPA
  • Auteclínio Lopes de Farias Neto CPAC/EMBRAPA

Keywords:

Green manure, savanna, leguminosae

Abstract

Canavalia brasiliensis has a great potential as green manure in Brazilian Savanna. The species gives nitrogen to subsequent crops and produces excellent dry matter. On the other side, even under suitable environment conditions, several seeds don’t germinate due to the impermeable seed coat. This trial aimed to identify different treatments for dormancy breaking. Some scrub methods were tried: a) manual removal of distal portion of the seed, with or without distilled water soaking; 19 seed immersion on boiling water for 30, 60, 180, 300 and 600 seconds; e) seed immersion on H2SO4 for 5, 10, 15, 20, 30, 40, 50 and 60 minutes; d) thermal impact (24 h at 25 0C followed by 24 h at 5°C or 40°C, then returning to 25°C); e) alcohol immersion for 5, 15, 30 and 60 min.; f) control. Treatments that provided better germination were: removal of distal portion with and without water soaking (99.6 and 99.2% germination, respectively), H2SO4 for 60 min. (95.9%) and boiling water for 60 and 30 sec (97.7 and 94.8% germination, respectively).

KEY-WORDS: Green manure; savanna; leguminosae.

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Published

2007-12-12

How to Cite

AMABILE, R. F.; GARCIA, J.; DUARTE, J. B.; SILVA, J. C. S.; FARIAS NETO, A. L. de. BREAKDOWN OF SEED DORMANCY IN Canavalia brasiliensis. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], Goiânia, v. 25, n. 1, p. 69–76, 2007. Disponível em: https://revistas.ufg.br/pat/article/view/2737. Acesso em: 25 nov. 2024.

Issue

v. 25, n. 1, Jan./Jun. 1995

Section

Research Article

License

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