Thysanoptera and the Pollination of Flowers

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Abstract
Tests and observations made on alfalfa, California poppies (Eschscholtzia califomica), Clarkia elegans, and other flowers, demonstrate that thrips of several species can carry pollen from flower to flower and can bring about cross pollination under field conditions. Frankliniella tritici and F. occidentalis were used most extensively in making tests. Observations relative to pollen-carrying proclivities were also made on F. minuta, Sericothrips apterus, Taeniothrips inconsequens, Thrips madronii and Aeolothrips kuwanii. Importance of excluding thrips in breeding experiments, where crossing is not desired, is emphasized.

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