Morfologia e estabelecimento de plântulas de Cryptocarya moschata Nees, Ocotea catharinensis Mez e Endlicheria paniculata (Spreng.) MacBride - Lauraceae
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Data
1999-10-01
Autores
Moraes, Pedro Luís Rodrigues de [UNESP]
Paoli, Adelita Aparecida Sartori [UNESP]
Título da Revista
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Editor
Sociedade Botânica de São Paulo
Resumo
Foram descritos aspectos morfológicos de plântulas de Cryptocarya moschata Nees, Ocotea catharinensis Mez e Endlicheria paniculata (Spreng.) MacBride em desenvolvimento, em condições naturais e em casa de vegetação, de material coletado no Parque Estadual de Carlos Botelho-SP (24º44' - 24º03'S e 47º46' - 48º10'W). C. moschata apresentou um padrão de desenvolvimento de plântulas diferente das demais, com pecíolos cotiledonares alongados e soldados na região hipocotilar, ausência de catáfilos, torção na região do hipocótilo, e emissão de um par de eófilos simultâneos. O. catharinensis e E. paniculata apresentaram plântulas com emissão simultânea de três a cinco eófilos espiralados, em média. Na natureza, as plântulas de C. moschata caracterizaram-se por permanecer latentes por períodos longos, até o surgimento de clareiras ou incidência maior de luz, evidenciado pela ausência de indivíduos jovens em condições de sub-bosque da mata. As plântulas de O. catharinensis se estabeleceram na sombra, independentemente da formação de clareiras para o seu desenvolvimento, apresentando inúmeros juvenis no sub-bosque. Para E. paniculata, houve indicações de que a espécie apresenta plasticidade alta, desenvolvendo-se tanto em condições sombreadas como a pleno sol, em áreas perturbadas de borda ou de grandes clareiras, podendo ser colonizadora de áreas degradadas.
Morphological characteristics of seedling development of C. moschata, O. catharinensis and E. paniculata, both in the wild and in nursery, are described. Samples were collected from Parque Estadual de Carlos Botelho-SP (24º44' - 24º03'S and 47º46' - 48º10'W). C. moschata has a different seedling development pattern from the others with elongated cotyledonary petioles, connate to the hypocotylar region; absence of cataphylls and twist in the hypocotylar region; and the emission of a pair of simultaneous eophylls. O. catharinensis and E. paniculata seedlings have a simultaneous emission of three to five spirally arranged eophylls, on average. In the wild, seedlings of C. moschata were characterized by long periods of latency till the arising of gaps or increased incidence of light, which is evidenced by the lack of juveniles in understore conditions. Seedlings of O. catharinensis established in shade, regardless of the presence of gaps for their development, presenting several juveniles in understore. For E. paniculata, there was evidence that this species presented high plasticity, developing in shade as well as in full luminosity conditions, in border areas or large gaps, possibly being a colonizer of disturbed areas.
Morphological characteristics of seedling development of C. moschata, O. catharinensis and E. paniculata, both in the wild and in nursery, are described. Samples were collected from Parque Estadual de Carlos Botelho-SP (24º44' - 24º03'S and 47º46' - 48º10'W). C. moschata has a different seedling development pattern from the others with elongated cotyledonary petioles, connate to the hypocotylar region; absence of cataphylls and twist in the hypocotylar region; and the emission of a pair of simultaneous eophylls. O. catharinensis and E. paniculata seedlings have a simultaneous emission of three to five spirally arranged eophylls, on average. In the wild, seedlings of C. moschata were characterized by long periods of latency till the arising of gaps or increased incidence of light, which is evidenced by the lack of juveniles in understore conditions. Seedlings of O. catharinensis established in shade, regardless of the presence of gaps for their development, presenting several juveniles in understore. For E. paniculata, there was evidence that this species presented high plasticity, developing in shade as well as in full luminosity conditions, in border areas or large gaps, possibly being a colonizer of disturbed areas.
Descrição
Palavras-chave
Seedlings, Cryptocarya moschata, Ocotea catharinensis, Endlicheria paniculata
Como citar
Brazilian Journal of Botany. Sociedade Botânica de São Paulo, v. 22, p. 287-295, 1999.