Morfologia de plântulas e estádios juvenis de espécies invasoras - DOI: 10.4025/actascibiolsci.v29i3.475

Káthia Socorro Mathias Mourão; Laércio Domingues; Juliana Marzinek

doi:10.4025/actascibiolsci.v29i3.475

Morphology and development of seedlings and saplings of weeds - DOI: 10.4025/actascibiolsci.v29i3.475

Authors

Káthia Socorro Mathias Mourão UEM Author
Laércio Domingues UEM Author
Juliana Marzinek Unesp Botucatu Author

DOI:

https://doi.org/10.4025/actascibiolsci.v29i3.475

Keywords:

morfologia, plântula, planta invasora, planta jovem

Abstract

The morphology of 20 species of weeds that occur in the most common crops in Maringá, Paraná State, Brazil and adjacent regions were described at early developmental stages, in order to identify the species in the field and provide information for taxonomic and ecological works. Sixteen species featured epigeal-foliaceous seedlings. The seedling in Cardiospermum halicacabum is epigeal-fleshy; in Cenchrus echinatus and Digitaria horizontalis it is hypogeal and in Commelina virginica is epigeal-cryptocotyledonar. The differentiation of the first eophyll occurred within ten (Digitaria horizontalis) to 35 days (Bidens pilosa) and the first metaphyll appeared within 22 (Commelina virginica) to 49 days (Acanthospermum australe). The number of eophylls varied from one to four, and the phyllotaxis varied from alternate to opposite.

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Author Biography

Káthia Socorro Mathias Mourão, UEM

Possui Graduação em Ciências Biológicas pela Universidade Federal do Maranhão (1989), Mestrado (1992) e Doutorado (1997) em Ciências Biológicas (Biologia Vegetal) pela Universidade Estadual Paulista Júlio de Mesquita Filho. Atualmente é Professor Associado A da Universidade Estadual de Maringá. Tem experiência na área de Botânica, com ênfase em Anatomia Vegetal, atuando principalmente nas seguintes linhas de pesquisa: anatomia e morfologia de órgãos reprodutivos e de plântulas e anatomia aplicada ao controle de qualidade de plantas medicinais Currículo Lattes

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Published

2007-12-05

Issue

Vol. 29 No. 3 (2007)

Section

Botany

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How to Cite

Morphology and development of seedlings and saplings of weeds - DOI: 10.4025/actascibiolsci.v29i3.475. (2007). Acta Scientiarum. Biological Sciences, 29(3), 261-268. https://doi.org/10.4025/actascibiolsci.v29i3.475