[The relevance of cereal grain pollen in hayfever (author's transl)].

Our studies indicate that rye pollen appears to be an important factor in hayfever in Austria. High air concentration of rye pollen are not only found in the immediate vicinity of the cultivated fields, but also at considerable distance from these fields. It is important to note that the rye plant produces about 8 to 35 times more pollen per anther than the wheat plant. Corn (Zea mays) pollen is found in lower concentrations as an airborn pollen because of its density. The importance of rye pollen in hay-fever has been substantiated in a clinical study and by the "biological exposure test".