SEED METRICS AND INFLUENCE OF TEMPERATURES AND PRE-GERMINATION TREATMENTS ON GERMINATION OF CAESALPINIA FERREA SEEDS
The objective of this study was to evaluate seed metrics, optimum temperature for germination and efficiency of five pre-germination treatments for overcoming dormancy of Caesalpinia ferrea seeds. Seeds were subjected to constant temperatures of 15, 20, 25, 30 and 35°C and to the following pre-germi...
| Autores: | , , , , , |
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| Tipo de documento: | artigo |
| Estado: | Versão publicada |
| Data de publicação: | 2023 |
| País: | Brasil |
| Recursos: | Universidade Federal de Mato Grosso (UFMT) |
| Repositório: | Nativa (Sinop) |
| Idioma: | inglês |
| OAI Identifier: | oai:periodicoscientificos.ufmt.br:article/11751 |
| Acesso em linha: | https://periodicoscientificos.ufmt.br/ojs/index.php/nativa/article/view/11751 |
| Access Level: | Acceso aberto |
| Palavra-chave: | dormancy scarification seed dimensions |
| Resumo: | The objective of this study was to evaluate seed metrics, optimum temperature for germination and efficiency of five pre-germination treatments for overcoming dormancy of Caesalpinia ferrea seeds. Seeds were subjected to constant temperatures of 15, 20, 25, 30 and 35°C and to the following pre-germination treatments: nicking with pincers; immersion in water for 24 hours at room temperature; scarification with sandpaper; immersion in caustic soda for 60 minutes; and control (untreated seeds). Germination rate was assessed by germination percentage and germination speed index. A completely randomized design was used with four replicates of 50 seeds each and means were compared by Tukey test at 5% probability. The best germination performance was obtained in the 15-30°C temperature range and by using chemical scarification with immersion in caustic soda, and mechanical scarification by nicking with pincers and by rubbing on sandpaper. |
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