Economic Botany

, Volume 21, Issue 4, pp 363–366 | Cite as

Some studies on secondary dormancy inLimnanthes seed

  • S. J. Toy
  • B. C. Willingham


The seeds of 10 accessions ofLimnanthes, representing 7 species and their varieties were moistened and placed in an 80°F cabinet for up to 14 days. Then they were transferred to 40, 50 or 60°F temperatures for germination. In two accessions, 85% of the seeds became dormant after only 2 days at 80°F. In 6 accessions, up to 80% of the seeds became dormant after 14 days at 80°F. In two other accessions there was little or no dormancy induced. After 16 months, one half the ungerminated seeds in each treatment were dried under room conditions for 2-1/2 months. Then they were again moistened and placed under germination temperatures. Up to 78% of the seeds thus treated germinated, compared with few or none of those maintained continuously under germination conditions.


Alba Economic Botany Petri Plate Room Condition Germination Condition 
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Literature Cited

  1. 1.
    Gentry, H. S., and R. W. Miller. 1965. The search for new industrial crops IV. Prospectus ofLimnanthes. Econ. Bot.19: 25–32.Google Scholar
  2. 2.
    Miller, R. W., M. E. Daxenbichler, F. R. Earle, and H. S. Gentry. 1964. Search for new industrial oils. VIII. The genusLimnanthes. J. Amer. Oil Chemists’ Soc.41: 167–169.CrossRefGoogle Scholar
  3. 3.
    Toy, S. J., and B. C. Willingham. 1966. Effect of temperature on seed germination of ten species and varieties ofLimnanthes. Econ. Bot.20: 71–75.Google Scholar

Copyright information

© The New York Botanical Garden 1967

Authors and Affiliations

  • S. J. Toy
  • B. C. Willingham
    • 1
  1. 1.Crops Research Division, Plant Introduction StationU.S. Dept. of Agriculture, Agricultural Research ServiceChico

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