Skip to Main Content
The effects of desiccation on seeds of Acer saccharinum and Aesculus pavia: recalcitrance in temperate tree seedsAuthor(s): Kristina F. Connor; Franklin T. Bonner
Source: Trees 15:131-136
Publication Series: Scientific Journal (JRNL)
Station: Southern Research Station
PDF: View PDF (773.86 KB)
DescriptionThis study was undertaken to determine how the results from lipid, moisture, and differential scanning calorimetry analyses conducted on silver maple (Aceraceae: Acer saccharinum L.) and red buckeye (Hippocastanaceae: Aesculus pavia L.) compared with those obtained from previous studies on white and water oaks (Fagaceae: Quercus alba and Q. nigra) and the tropical zone species American muskwood (Meliaceae: Guarea guidonia and carapa (Meliaceae: Carapa guianensis). Seeds were air-dried at room temperature for 9-11 days. At intervals, germination was tested, moisture determined, and lipids extracted. It was found that, like the other recalcitrant seeds, (1) viability was greatly reduced or lost after 11 days of drying, (2) percentage changes in individual fatty acids were not related to seed viability, and (3) results from the differential scanning calorimetry studies revealed a strong relationship between enthalpy/onset data from the embryo and cotyledon tissues and loss of viability. Also, silver maple seeds experienced a 50% reduction in viability by day 5 of drying and retained an axis moisture content over 25% throughout the experiment. However, unlike the other recalcitrant seeds surveyed, both silver maple and red buckeye had a significant reduction in the total amount (mg/g) of cotyledon lipids as the experiment progressed. However, no decrease in the unsaturated/saturated fatty acid ratio was found, so we conclude that in these species lipid peroxidation is not a marker of declining seed viability. Also, red buckeye seeds did not lose 50% viability until after day 8 of the experiment, and axis moisture content fell well below 20% as the seeds dried.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationConnor, Kristina F.; Bonner, Franklin T. 2001. The effects of desiccation on seeds of Acer saccharinum and Aesculus pavia: recalcitrance in temperate tree seeds. Trees 15:131-136
Keywordsrecalcitrance, Aesculus pavia, Acer saccharinum, lipids, moisture content, viability
- Sap sugar parameters of silver maple provenances and clones grown on upland and bottomland sites
- A stocking diagram for midwestern eastern cotonwood-silver maple-American sycamore bottomland forests
- Late-season flooding regimes influence the accretion and partitioning of nitrogen and biomass in silver maple seedlings
XML: View XML