SciELO - Scientific Electronic Library Online

vol.47 issue1Evaluation of apple pomace based reconstituted feed in rats after solid state fermentation and ethanol recoverySpatial partition of artificial structures by fish at the surroundings of the conservation unit - Parque Estadual da Ilha Anchieta, SP, Brazil author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Brazilian Archives of Biology and Technology

Print version ISSN 1516-8913On-line version ISSN 1678-4324


SOUZA, Luiz A. de; MOSCHETA, Ismar S.; MOURAO, Káthia S. M.  and  ROSA, Sonia M. da. Morphology and anatomy of the flower and anthesis of Metrodorea nigra St. Hill. (Rutaceae). Braz. arch. biol. technol. [online]. 2004, vol.47, n.1, pp.107-112. ISSN 1516-8913.

Studies on the morphology and anatomy of the flower and anthesis of Metrodorea nigra St. Hill. (Rutaceae) showed perfect flowers, which occurred in panicle. The peak of the flowering was August and September. The anthesis was diurnal and the species presented protandrous flowers. The green sepals and the red petals presented papillose epidermis with stomata and parenchymatic mesophyll. The tetrasporangiate anther presented a papillose epidermis too, endothecium cells with secondary parietal thickenings, two middle layers and binucleate tapetum. The only pistil presented an ovary wall with nectariferous tissue and a meristematic ventral epidermis, a solid style and an inconspicuous stigma. The ovules were anatropous, bitegmic and crassinucelate and presented an obturator of funicular and placentic origin. The nectaries occurred around the ovary as a disk-like structure and in its apex as a number of pillose protuberances.

Keywords : Metrodorea nigra; Rutaceae; blossom; anthesis; protandry; flower structure.

        · abstract in Portuguese     · text in English     · English ( pdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License