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Pollen Development and Morphology in four Species of Pterocactus (Cactaceae)

2009; Finnish Zoological and Botanical Publishing Board; Volume: 46; Issue: 5 Linguagem: Inglês

10.5735/085.046.0505

ISSN

1797-2442

Autores

Marina M. Gotelli, Agustina Azul Scambato, Beatriz G. Galati, Roberto Kiesling,

Tópico(s)

Botanical Research and Applications

Resumo

We report a detailed study of the development and morphology of pollen in four species of the genus Pterocactus (Cactaceae), carried out by using LM and SEM. The anther is tetrasporangiate, its wall consists of epidermis, endothecium, one middle layer and a binucleate secretory tapetum. Microspore tetrads are tetrahedrical and pollen grains are shed at bicellular stage. Pollen grains are pantoporate, with a perforate tectum and supratectate spinules.

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