Fenologia e germinação de sementes de visgueiro-do-igapó (Parkia discolor Spruce ex Benth)
This work had as objective to describe the phenology of visgueiro-of-igapó (P. discolor Spruce ex Benth.), correlating it with the ambient factors, well with describing the morphology of seedlings and young plants, beyond evaluating the efficiency of the application of pregerminative treatments,...
| Autor principal: | Pereira, Sammy Aquino |
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| Grau: | Dissertação |
| Idioma: | por |
| Publicado em: |
Instituto Nacional de Pesquisas da Amazônia - INPA
2020
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| Assuntos: | |
| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/5134 http://lattes.cnpq.br/0625749704569842 |
| Resumo: |
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This work had as objective to describe the phenology of visgueiro-of-igapó (P. discolor
Spruce ex Benth.), correlating it with the ambient factors, well with describing the
morphology of seedlings and young plants, beyond evaluating the efficiency of the
application of pregerminative treatments, aiming the overcoming of the dormancy of the
seeds. It was evidenced that the species flowered and bore fruit since the beginning of
the flood, culminating the period of the production of fruits with the maximum period of
the flood, what favors the dispersion of the species, which can be characterized as
semideciduous. It was observed that the germination is of the epigeous-phanerocotylar
type, presenting from 1 to 3 pairs of leaflets, with 14 to 19 pairs of leaflets. The young
plant presents woody base, with 5 eophylls, alternating, with a spherical gland in the
insertion of the leaflets and a vegetative egg yolk in the lower insertion of each eophylls.
Was confirmed that the seeds present seed coat dormancy and that this can be
surpassed with the blunts or sandpaper, of the seeds in the proximal portion and
proximal and distal portions at the same time. The pregerminative treatment with humid
and dry heat, under different temperatures, for some periods of conditioning, had not
been effective for the overcoming of the dormancy of seeds of P. discolor |