Effect of pH, Anthocyanin, and Flavonoid Co-pigments on the Color of Statice Flowers

in Journal of the American Society for Horticultural Science
Authors:
S. AsenPlant Genetics and Germplasm Institute, Agricultural Research Center, Agricultural Research Service Beltsville, Maryland 20705

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K. H. NorrisPlant Genetics and Germplasm Institute, Agricultural Research Center, Agricultural Research Service Beltsville, Maryland 20705

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R. N. StewartPlant Genetics and Germplasm Institute, Agricultural Research Center, Agricultural Research Service Beltsville, Maryland 20705

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P. SemeniukPlant Genetics and Germplasm Institute, Agricultural Research Center, Agricultural Research Service Beltsville, Maryland 20705

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Abstract

The anthocyanin isolated from flowers of Limonium cvs. Twilight Lavender and Midnight Blue was delphinidin 3,5-diglucoside, and that from ‘Blue Bonneť and ‘American Beauty’ was delphinidin 3-glucoside. The major flavonoid co-pigments in all 4 cvs. were luteolin and its 6-C-glucoside (iso-orientin). These co-pigments were also present in white ‘Iceberg’ and yellow ‘Gold Coast’. The range of colors from reddish-purple to blue for the various cvs. was directly related to the pH of the tissue.

Contributor Notes

Received for publication September 25, 1972.

Physiologist and Horticulturists, Ornamentals Laboratory, Plant Genetics and Germplasm Institute.

Leader, Instrumentation Research Laboratory, Agricultural Marketing Research Institute.

We express appreciation to Miss P. S. Budin for her competent technical assistance and to Dr. G. Hrazdina for a sample of delphinidin 3,5-diglucoside.

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