Floral vascular patterns of the double-flowered and wild-type morphs of Nigella damascena L. (Ranunculaceae)

  • Thierry Deroin Institut de Systématique, Evolution, Biodiversité, ISYEB UMR 7205 CNRS-MNHN-UPMC-EPHE, Muséum national d’Histoire naturelle, Sorbonne Universités, 57 rue Cuvier CP39, F-75005 Paris, France
  • Catherine Damerval CNRS, UMR 0320/UMR 8120, Génétique Quantitative et Evolution – Le Moulon, F-91190 Gif-sur-Yvette, France
  • Martine Le Guilloux Institut de Systématique, Evolution, Biodiversité, ISYEB UMR 7205 CNRS-MNHN-UPMC-EPHE, Muséum national d’Histoire naturelle, Sorbonne Universités, 57 rue Cuvier CP39, F-75005 Paris, France
  • Florian Jabbour Institut de Systématique, Evolution, Biodiversité, ISYEB UMR 7205 CNRS-MNHN-UPMC-EPHE, Muséum national d’Histoire naturelle, Sorbonne Universités, 57 rue Cuvier CP39, F-75005 Paris, France
DOI: https://doi.org/10.5281/zenodo.160356

Abstract

The perianth of the double-flowered morph of Nigella damascena L. consists of spirally inserted petaloid sepals and sepal-like organs, similar in shape and colour to the petaloid sepals of the wild-type flower. It is devoid of petals. We compare the vascularization of each organ category of the double flower with that of the wild-type. We show that the vascular patterns of the sepal-like organs and of the petals are identical, and found an inverse relationship between the number of bracts and the number of sepals in the double-flowered morph. These two surprising findings will influence the future evo-devo studies on this plant model.

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Fig. 4. Hand cross-sections of some double flowers of Nigella damascena (A-F), arranged in increasing bract numbers, sepals in black; G – wild-type flower for comparison.
Published
2015-05-20
How to Cite
DEROIN, Thierry et al. Floral vascular patterns of the double-flowered and wild-type morphs of Nigella damascena L. (Ranunculaceae). Modern Phytomorphology, [S.l.], v. 7, p. 13-20, may 2015. ISSN 2227-9555. Available at: <http://ojs.phytomorphology.org/index.php/MP/article/view/80>. Date accessed: 11 apr. 2018. doi: https://doi.org/10.5281/zenodo.160356.
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Issue
Vol 7 (2015)
Section
Research Articles
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