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| MARTINS,SHIRLEY; SCATENA,VERA L.. |
| The Cyperaceae species are present in different ecosystems and constitute the herbaceous extract. Of the approximately 5,500 species of the family; a third has Kranz anatomy, representing an important characteristic of the taxonomy and phylogeny of the group. In Cyperus laxus L. (non-Kranz) and Fimbristylis dichotoma Vahl (Kranz), development begins with germination that is marked by the emergence of the coleoptiles, followed by the primary root, which is ephemeral. The rhizome originates from the mesocotyl and it promotes the vascular connection between the roots, leaves and scapes. The continuity of the tissues is evidenced by the presence of an endodermis and pericycle in all vegetative organs. Leaves and scapes differ between the two species by the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pericycle; Endodermis; Casparian strips; Seedling. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000200605 |
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| Menezes,Nanuza L. de; Silva,Delmira C.; Arruda,Rosani C.O.; Melo-de-Pinna,Gladys F.; Cardoso,Vanessa A.; Castro,Neuza M.; Scatena,Vera L.; Scremin-Dias,Edna. |
| This paper proposes a new interpretation for primary thickening in monocotyledons. The anatomy of the vegetative organs of the following species was examined: Cephalostemon riedelianus (Rapataceae), Cyperus papyrus (Cyperaceae), Lagenocarpus rigidus, L. junciformis (Cyperaceae), Echinodorus paniculatus (Alismataceae) and Zingiber officinale (Zingiberaceae). The endodermis with meristematic activity was observed in the root of all the species, in the stem of Cyperus, Cephalostemum and Lagenocarpus rigidus, and in the leaf trace of Cyperus and leaf of Echinodorus. Considering the continuity of tissues through the root, stem and leaf, the authors conclude that in the stem the pericycle remains active throughout the life of the plant as the generator of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cephalostemon; Cyperus; Echinodorus; Lagenocarpus; Zingiber; Meristematic endodermis; Pericycle; Primary thickening. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652005000200006 |
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