Cation Concentration in Post-Imbibed Winterfat Seeds as Influenced by Imbibition Temperature

Project #: 100796  –   Updated: April 14, 2013

Project Summary

Winterfat prefers cold-weather seedings (late fall, early spring), and there is a correlation between reduced seedling vigor and imbibition at warmer temperatures. This study looked at whether imbibition at warm temperatures damages winterfat seed membranes, as well as whether there is an increase in cation loss due to potential membrane damage.

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Location (by county):
Laramie County (WY)

Watersheds:
Crow

Congressional Districts:
WY District 00

Bird Conservation Regions:
Shortgrass Prairie

USFWS Regions:
Mountain Prairie Region

Public Access

Site Name Publicly Accessible
Cheyenne, Wyoming Yes

Full Project Description

Winterfat prefers cold-weather seedings (late fall, early spring), and there is a correlation between reduced seedling vigor and imbibition at warmer temperatures. This study looked at whether imbibition at warm temperatures damages winterfat seed membranes, as well as whether there is an increase in cation loss due to potential membrane damage.

Goals and Targets

Primary goals:

The projects collected in this database contain summaries and conclusions from a wide variety of papers regarding restoration research relevant to the Colorado Plateau. Using the conservationregistry.org search engine, search for a particular species (i.e. Atriplex canescens, fourwing saltbush), type of study (i.e. common garden, reciprocal transplant) or keyword (i.e. ecotype, grazing) in order to view the citations, summaries and conclusions of relevant papers.

Targeted habitats:

    • Forests and Woodlands
    • Human Habitats
    • Shrublands and Grasslands

Targeted species:

  • Winter-fat Krascheninnikovia lanata

Actions

Project Actions

Outcomes

Is the success of this project's actions being monitored?   No/Unknown

What lessons have been learned and/or what suggestions do you have for similar activities?

Conclusion(s):
Winterfat seeds did not appear to sustain membrane damage when imbibition occurred at high temperatures (i.e. 20° C), and as a result, no cation-loss was detected. Although winterfat will have reduced seedling vigor when planted during warm periods, the reason for this is not yet known.

What additional information would you like to share?

Booth later hypothesized that mitochondrial damage occurs when seeds are not stored at sufficiently low temperatures (-18° C), and the seeds in this study were stored at 5 ° C. See Booth (1999) [project #100782] for more information. A link to this project is under "Related Projects" on the right hand side of the page.

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Organization

Colorado Plateau Native Plant Program (CPNPP)
(Federal Government)

Primary Contact

Rachel Ostlund
Colorado Plateau Native Plant Program
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Partners

  • Bureau of Land Management
  • Colorado Plateau Native Plant Program (CPNPP)
  • U.S. Geological Survey
  • Colorado Plateau Cooperative Ecosystem Studies Unit

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