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Influence of the functional traits of seeds on germination dynamics and morphofunctional pattern of the seedlings
Polli, Anderson; Romagnolo, Mariza Barion; Souza, Luiz Antonio de; Pastorini, Lindamir Hernandez.
Afiliación
  • Polli, Anderson; Universidade Estadual de Maringá. Departamento de Biologia. Maringá. BR
  • Romagnolo, Mariza Barion; Universidade Estadual de Maringá. Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura. Maringá. BR
  • Souza, Luiz Antonio de; Universidade Estadual de Maringá. Departamento de Biologia. Maringá. BR
  • Pastorini, Lindamir Hernandez; Universidade Estadual de Maringá. Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura. Maringá. BR
Acta sci., Biol. sci ; 42: e52154, fev. 2020. tab, ilus
Article en En | LILACS, VETINDEX | ID: biblio-1460948
Biblioteca responsable: BR68.1
Ubicación: BR68.1
ABSTRACT
Aiming to compare morphofunctional features related to dispersion and establishment of plants, this study evaluated seed biometry and biomass, as well as germination and emergence potential in eight plant species native to the Semideciduous Seasonal Forest. Biometric measurements and biomass of seeds were obtained with a caliper and a precision scale.Afterwards, they were subjected to a germination test in BOD chambers under constanttemperature and 12hoursphotoperiod, and sown in styrofoam trays containing organic substrate and sand, kept in full sunlight.Data from germination and emergence was subjected to cluster analysis, according to the functional morphotype of the seedling.Most species presented seeds with a rounded shape, uniform staining at the mature stage, varied coat consistency, two types of dispersal syndromes (anemochory and zoochory) and four morphofunctional patterns in developing seedlings (crypto-hypogeal-storers, crypto-epigeal-storers, phanero-epigeal-storers and phanero-epigeal-foliaceous). The species belonging to group I (Albizia niopoides, Cedrela fissilis, Pterogyne nitensand Randia ferox) have foliaceous photosynthetic cotyledons and group II (Cabralea canjerana, Eugenia pyriformis, Inga laurinaand Poecilantheparviflora) have a reserve cotyledon. Species of group I had higher means in the percentage and rate of germination, less variability and amplitude of days for seedlings emergence. On the other hand, species of group II showed higher mean values in seed biometry and biomass. Thus, seeds with foliaceous cotyledons have an optimized development because of luminosity, whereas seeds with reserve tend to have slower development, remaining at the seedling stage for a longer time.
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Texto completo: 1 Colección: 01-internacional Base de datos: LILACS / VETINDEX Asunto principal: Germinación / Biomasa / Plantones Idioma: En Revista: Acta sci., Biol. sci Asunto de la revista: BIOLOGIA Año: 2020 Tipo del documento: Article / Project document País de afiliación: Brasil Pais de publicación: Brasil
Texto completo
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Imprimir
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Texto completo: 1 Colección: 01-internacional Base de datos: LILACS / VETINDEX Asunto principal: Germinación / Biomasa / Plantones Idioma: En Revista: Acta sci., Biol. sci Asunto de la revista: BIOLOGIA Año: 2020 Tipo del documento: Article / Project document País de afiliación: Brasil Pais de publicación: Brasil