Engineering blue-hued flowers: Study of pH in anthurium spathe provides clues to generating blues

Experiments were designed to identify the anthurium cultivars and colors with the best potential to transform to blue-colored flowers. Scientists investigated the relationship between epidermal vacuolar pH and factors including cultivar, spathe color, developmental stage of the spathe, location of anthocyanin within the spathe, differences between the leaf surfaces, and postharvest changes. Results suggested that in anthurium, corals may be best suited for transformation because they contain lower levels of pH-reducing anthocyanins.

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