The Occurrence of Gibberellins in Mature Dry Seeds

The occurrence of gibberellins in the extracts of mature dry seeds from 18 different species of dicotyledonous plants was examined by means of paper chromatography and rice seedling methodGibberellins were evidently found in the seeds of sunflower, head lettuce, ucumber, water melon, towel gourd, dodder, morning-glory, cypress vine, sweet potato, common moonflower, balloon vine, garden nasturitium, yellower lupine, broad bean, and apple, but not in those of tomato, natsudaidai, and Japanese radish The seeds of the Convolvulaceae contained considerably higher concentrations of gibberellins and their contents were equivalent to 0.1-1μg. gibberellin A pergram of dry seed The writer wishes to thank Prof. T. Miwa and Dr. T. Hayashi for their guidance