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TitleAnalysis and developmental profile of carotenoid pigments in petals of three yellow petunia cultivars
Publication TypeJournal Article
Year of Publication1997
AuthorsNielsen, K.M., and Bloor S.J.
JournalScientia Horticulturae
Pagination257 - 266
Date Published1997
ISSN03044238 (ISSN)
AbstractPetal colour was assessed for three yellow petunia cultivars, 'Summer Sun', 'Bright Yellow', and 'California Girl'. Pigment profiles were determined for five stages of petal development and differentially coloured mature petal tissues. Comparison of the pigment concentrations in deeply coloured and paler tissue indicated that carotenoids are responsible for the increased colour intensity and overall yellow hue of the flowers. Early pigmentation can be attributed to a combination of chlorophyll and carotenoid pigments, while mature petal coloration is due to further production of carotenoids and xanthophylls in 'Summer Sun' and 'California Girl'. In 'Bright Yellow', the yellow coloration is due to the persistence of high carotenoid levels found in immature flower buds as the flower matures. The predominant pigments and changes in pigment concentrations of developing flowers differed among the cultivars.

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