HÉRIKA CHAGAS MADUREIRA1*, TELMA NAIR SANTANA PEREIRA1, MAURA DA CUNHA2, DENISE ESPELLET KLEIN3
BIOCELL, Vol.36, No.2, pp. 83-90, 2012, DOI:10.32604/biocell.2012.36.083
Abstract The success of sexual plant reproduction is directly influenced by specific interactions between the pollen and pistil. Light, fluorescence and scanning electron microscopy techniques were used to evaluate the steps of pollination in sour passion fruit plants (Passiflora edulis Sims). In the compatible interaction, pollen tubes grow through stigma projections towards the ovary. The pollen grain surface was found to be spheroidal and to consist of heteroreticulate exine with six colpi. Furthermore, analysis in vivo of pollenpistil interactions indicated that stigmas of flowers 24 hours before anthesis are unable to discriminate compatible (genetically unrelated) and incompatible (genetically related) pollen grains.… More >
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