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    Author(s): C. D. Jones; S. L. Jensen; M. R. Stevens
    Date: 2010
    Source: In: Pendleton, Rosemary; Meyer, Susan; Schultz, Bitsy, eds. Conference Proceedings: Seed Ecology III - The Third International Society for Seed Science Meeting on Seeds and the Environment - "Seeds and Change"; June 20-June 24, 2010; Salt Lake City, Utah, USA. Albuquerque, NM: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 74-75.
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (165.52 KB)

    Description

    Seed dormancy is a survival strategy that better ensures the persistence of a species. Dormancy is characterized as exogenous if caused by factors outside the embryo or endogenous if caused by factors within the embryo. Exogenous dormancy is further characterized as physical, mechanical or chemical, while endogenous dormancy may be physiological or morphological. Combinations of these factors may be responsible for dormancy in some species (Jones and Nielson, 1992). Some lupines exhibit physical dormancy. The integrity of the physical barrier varies by species, accession and year. It has been demonstrated that dormancy in lupines is also affected by relative humidity at the time the seed reaches maturity (Quinlivan 1970). Highly dormant seed lots require scarification to assure acceptable germination rates when planted. We tested chemical, mechanical, and thermal scarification treatments to discover which was most predictable and yielded the highest germination.

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    Citation

    Jones, C. D.; Jensen, S. L.; Stevens, M. R. 2010. An evaluation of seed scarification methods of four native Lupinus species. In: Pendleton, Rosemary; Meyer, Susan; Schultz, Bitsy, eds. Conference Proceedings: Seed Ecology III - The Third International Society for Seed Science Meeting on Seeds and the Environment - "Seeds and Change"; June 20-June 24, 2010; Salt Lake City, Utah, USA. Albuquerque, NM: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 74-75.

    Keywords

    seed scarification, seed dormancy, Lupinus species

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