ELECTRICAL CUES. “Flowers are negatively charged, while flying insects are positively charged. This has been suggested to facilitate pollen transfer between insects and flowers. A recent paper in Science indicates that the electric fields of flowers also might be pollinator cues. It has not been studied yet how long the electric field lasts in relation to stigma receptivity and pollen availability. It also is not yet clear when the flowers attain the electric field, thus whether and how the field is related to flower opening or closure.”
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