TECHONOLGY OF Qualea grandiflora MART. (VOCHYSIACEAE) SEEDS
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| Format: | Artículo científico |
| Sprache: | en |
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Universidade Federal de Lavras
2013
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| _version_ | 1876471898117767168 |
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| author | Sara Dousseau |
| author_facet | Sara Dousseau |
| contents | TECHONOLGY OF Qualea grandiflora MART. (VOCHYSIACEAE) SEEDS Sara Dousseau Amauri Alves de Alvarenga Lúcio de Oliveira Arantes Izabel de Souza Chaves Eduardo Valente Avelino Agrociencias Light drying orthodox substrate temperature Qualea grandiflora Mart. (Vochysiaceae), commonly known as “pau-terra”, is an arborous species native to the Brazilian savannah which possess commercial interests, as it can be used either as an ornamental or as a medicinal plant. “Pau-terra” can also be used in the heterogeneous reforestation of areas which are destined for restoration of permanent preservation degraded areas. Propagation studies with this species are scarce, being necessary then further clarification regarding the factors that influences the germination process. In this context, the objective of this work was to evaluate the influence of different temperatures, substrates and light conditions on seed germination. We selected light brown seeds which were subjected to different interactions between temperatures (15-25, 20-30, 25 and 30°C), substrate (paper, sand and vermiculite) and light (light and dark). All seeds were later dryincubated at 32°C for 3, 6 and 12 hours. After treatments, seeds were kept in BOD at 58% RH and the following parameters were calculated: germination (%G) and germination speed index (GSI); the formation of normal and abnormal seedlings and the number dead seeds. Interaction was observed for all variables. In the optimum temperature range, the seeds behaved as photoblastic neutral or indifferent. Under alternating temperatures, darkness enhanced the germination, especially when combined with the lower temperatures. We noted that the sowing in sand, at 25°C, allowed the maintenance of suitable combinations of germination and seedling development. With respect to desiccation tolerance, “pau-terra” seeds presented an orthodox behavior, with a linear increase of the vigor as function of drying. 2013 artículo científico 0104-7760 https://www.redalyc.org/articulo.oa?id=74425783012 en http://www.redalyc.org/revista.oa?id=744 CERNE application/pdf Universidade Federal de Lavras CERNE (Brasil) Num.1 Vol.19 |
| format | Artículo científico |
| id | redalyc_74425783012 |
| institution | Redalyc |
| language | en |
| publishDate | 2013 |
| publisher | Universidade Federal de Lavras |
| spellingShingle | TECHONOLGY OF Qualea grandiflora MART. (VOCHYSIACEAE) SEEDS Sara Dousseau Agrociencias Light drying orthodox substrate temperature TECHONOLGY OF Qualea grandiflora MART. (VOCHYSIACEAE) SEEDS Sara Dousseau Amauri Alves de Alvarenga Lúcio de Oliveira Arantes Izabel de Souza Chaves Eduardo Valente Avelino Agrociencias Light drying orthodox substrate temperature Qualea grandiflora Mart. (Vochysiaceae), commonly known as “pau-terra”, is an arborous species native to the Brazilian savannah which possess commercial interests, as it can be used either as an ornamental or as a medicinal plant. “Pau-terra” can also be used in the heterogeneous reforestation of areas which are destined for restoration of permanent preservation degraded areas. Propagation studies with this species are scarce, being necessary then further clarification regarding the factors that influences the germination process. In this context, the objective of this work was to evaluate the influence of different temperatures, substrates and light conditions on seed germination. We selected light brown seeds which were subjected to different interactions between temperatures (15-25, 20-30, 25 and 30°C), substrate (paper, sand and vermiculite) and light (light and dark). All seeds were later dryincubated at 32°C for 3, 6 and 12 hours. After treatments, seeds were kept in BOD at 58% RH and the following parameters were calculated: germination (%G) and germination speed index (GSI); the formation of normal and abnormal seedlings and the number dead seeds. Interaction was observed for all variables. In the optimum temperature range, the seeds behaved as photoblastic neutral or indifferent. Under alternating temperatures, darkness enhanced the germination, especially when combined with the lower temperatures. We noted that the sowing in sand, at 25°C, allowed the maintenance of suitable combinations of germination and seedling development. With respect to desiccation tolerance, “pau-terra” seeds presented an orthodox behavior, with a linear increase of the vigor as function of drying. 2013 artículo científico 0104-7760 https://www.redalyc.org/articulo.oa?id=74425783012 en http://www.redalyc.org/revista.oa?id=744 CERNE application/pdf Universidade Federal de Lavras CERNE (Brasil) Num.1 Vol.19 |
| title | TECHONOLGY OF Qualea grandiflora MART. (VOCHYSIACEAE) SEEDS |
| topic | Agrociencias Light drying orthodox substrate temperature |
| url | https://www.redalyc.org/articulo.oa?id=74425783012 |