Open AccessBehavior of the pollen tube of Poincianella pyramidalis (Tul.) L. P. Queiroz after compatible and incompatible crosses
Author(s) -
Marie Macedo Sousa Danielle,
Monteiro do R ecirc go Mailson,
de Lucena Alc acirc ntara Bruno iselane,
Maria Strozi Alves Meira Renata,
Elizanilda Ramalho do Rêgo
Publication year - 2016
Publication title -
african journal of agricultural research
Language(s) - English
Resource type - Journals
ISSN - 1991-637X
DOI - 10.5897/ajar2016.10957
Subject(s) - pollen tube , pollen , germination , ovule , biology , callose , gynoecium , botany , pollination , double fertilization , ovary , stamen , cell wall , endocrinology
Aiming to analyze the pollen tube growth behavior in compatible and incompatible crosses in Poincianella pyramidalis, on-field crosses were performed using flowers of 30 randomly selected individuals, which were self- and cross-pollinated. In the cross-pollination, the pollen germinated and the pollen tube grew in the transmitting tissue of the pistil, followed by a succession of callose rings through the growth of the tubes towards the ovary; after 8 h, the ovules were fertilized. On the other hand, in self-pollination, the pollen grains germinated, but the pollen tubes were inhibited during growth at the stylar transmitting tissue, indicating that the self-incompatibility of the species is homomorphic and gametophytic. Key words: Fabaceae, self-incompatibility, Caatinga, Poincianella pyramidalis, incompatible crosses, compatible crosses.
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