Coloration of the Chilean Bellflower, Nolana paradoxa, interpreted with a scattering and absorbing layer stack model

Détails

ID Serval
serval:BIB_C811451DFB82
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Coloration of the Chilean Bellflower, Nolana paradoxa, interpreted with a scattering and absorbing layer stack model
Périodique
Planta
Auteur(s)
Stavenga, Doekele G.; van der Kooi, Casper J. 
ISSN
0032-0935 (Print)
Statut éditorial
Publié
Date de publication
2016
Volume
243
Numéro
1
Pages
171-181
Langue
anglais
Notes
Cover picture
Résumé
The coloration of flowers is due to the combined effect of pigments and light-scattering structures. To interpret flower coloration, we applied an optical model that considers a flower as a stack of layers, where each layer can be treated with the Kubelka-Munk theory for diffusely scattering and absorbing media. We applied our model to the flowers of the Chilean Bellflower, Nolana paradoxa, which have distinctly different-colored adaxial and abaxial sides. We found that the flowers have a pigmented, strongly scattering upper layer, in combination with an unpigmented, moderately reflecting lower layer. The model allowed quantitative interpretation of the reflectance and transmittance spectra measured with an integrating sphere. The absorbance spectrum of the pigment measured with a microspectrophotometer confirmed the spectrum derived by modeling. We discuss how different pigment localizations yield different reflectance spectra. The absorbing layer stack model aids in understanding the various constraints and options for plants to tune their coloration.
Open Access
Oui
Création de la notice
07/09/2015 12:36
Dernière modification de la notice
20/08/2019 15:43
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