African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6574

Full Length Research Paper

Behavior of the pollen tube of Poincianella pyramidalis (Tul.) L. P. Queiroz after compatible and incompatible crosses

Danielle Marie Macedo Sousa
  • Danielle Marie Macedo Sousa
  • Federal Rural University of Semi-Arid, Graduate Program in Environment, Technology and Society, 59.625-900, Mossoró/RN, Brazil.
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Mailson Monteiro do Rêgo
  • Mailson Monteiro do Rêgo
  • Department of Plant Science, Federal University of Paraiba, Agricultural Science Center, 58.397-000, Areia/PB, Brazil.
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iselane de Lucena Alcântara Bruno
  • iselane de Lucena Alcântara Bruno
  • Department of Plant Science, Federal University of Paraiba, Agricultural Science Center, 58.397-000, Areia/PB, Brazil.
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Renata Maria Strozi Alves Meira
  • Renata Maria Strozi Alves Meira
  • Department of Plant Biology, Federal University of Viçosa, 36.570-000, Viçosa/MG, Brazil.
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Elizanilda Ramalho do Rêgo
  • Elizanilda Ramalho do Rêgo
  • Department of Plant Science, Federal University of Paraiba, Agricultural Science Center, 58.397-000, Areia/PB, Brazil.
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  •  Received: 03 March 2016
  •  Accepted: 20 May 2016
  •  Published: 23 June 2016

Abstract

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.