Chromatic exclusivity hypothesis and the physical basis of floral color
GOVIND, Ajit
Interactions Sol Plante Atmosphère [UMR ISPA]
International Center for Agricultural Research in the Dry Areas, CGIAR
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Interactions Sol Plante Atmosphère [UMR ISPA]
International Center for Agricultural Research in the Dry Areas, CGIAR
Language
en
Article de revue
This item was published in
Ecological Informatics. 2019, vol. 49, p. 40-44
Elsevier
English Abstract
This paper presents the results of floral spectral studies on 1275 flowers from India, Brazil, Israel, Germany, and Norway. Floral spectral reflectance from 400 to 700 nm (nm) was used to quantitatively represent ...Read more >
This paper presents the results of floral spectral studies on 1275 flowers from India, Brazil, Israel, Germany, and Norway. Floral spectral reflectance from 400 to 700 nm (nm) was used to quantitatively represent ‘human-perceived’ color of flowers in Red, Green, Blue color space. Floral spectral reflectance from 350 to 600 nm was used to discern and objectively represent ‘insect pollinator-perceived’ flower colors in color hexagon. We leverage the advantage offered by ‘quantified human perception’ provided by ‘human-perceived’ floral colors to represent the distribution of floral hues and uncover the relationship between the composition of incoming solar radiation and predominant ‘human-perceived’ floral colors at the tropics and the higher latitudes. Further, the observed species-level mutual exclusivity of ‘insect pollinator-perceived’ floral colors is stated as chromatic exclusivity hypothesis. We compare ‘human-perceived’ and ‘insect pollinator-perceived’ floral colors at Trivandrum (India) and provide a physical explanation for short and long ‘wavelength triads’ of insect pollinator and human visual sensitivity respectively.Read less <
Keywords
Floral spectral reflectance
Floral color
English Keywords
Human-perceived floral colors
Insect pollinator-perceived floral colors
Origin
Hal imported