Studies of longevity of seeds, of dormant period, and of vitality after subjection to certain conditions, have been made by numerous investigators, with many kinds of seeds. These all contribute to the understanding of changes which take place in the development of the seed, and of conditions necessary for growth. Such determinations have definite application to scientific agriculture. There may be called to notice results of a few notable studies of germination conditions of seeds. Dr. Candolle found certain seeds of Malvaceae, Leguminosae and Labiate to be germinable after having been kept dry for fifteen years. Beal found that various seeds, after having been buried for twenty-five years, grew; among these were Amaranthus retroflexus, Brassica nigra, Capsella Bursa-pastoris, Lepidium virginicum, Oenothera biennis, Polygonum Hydropiper, Portulaca olcracea, and Rumex crispus. Dr. L. H. Pammel determined, in experiments with a large number of kinds of weed seeds, that in general they germinate better after freezing and out-of-door conditions of wintering than when held over winter in dry storage.
Proceedings of the Iowa Academy of Science
©1924 Iowa Academy of Science, Inc.
King, Charlotte M.
"Viability Tests of Seeds of Different Ages,"
Proceedings of the Iowa Academy of Science, 31(1), 257-264.
Available at: https://scholarworks.uni.edu/pias/vol31/iss1/48