Arctic Seed Sterilization and Germination
Abstract
We conducted growth chamber experiments to overcome challenges of native seed germination relating to disease and germination time. We selected five northern species, Eriophorum vaginatum, E. virginicum, Anemone patens var. multifida, Polemonium reptans, and Senecio con-gestus, for their native ranges and commercial-nursery availability. Recommended stratification time for each species was either unknown or a minimum of 60 days. Seeds were sterilized with 70 percent ethanol, 10 percent hydro-gen peroxide, or UVC light to identify which method most effectively pre-vented pathogen infection. To determine if stratification time could be reduced, seeds underwent a 30-day cold, moist stratification. We tested which growth medium was most conducive to germination of the sterilized, stratified seeds: filter paper or sterilized potting soil. In a separate experiment, we tested if three different levels of gibberellic acid (GA; 0, 500, and 1000 ppm) could reduce stratification time to 15 days. The 70 percent ethanol was effective in a seed surface sterilization; an average of 84 percent of all seeds for all species treated showed no contamination. Germination following a 30-day cold, moist stratification was unsuccessful for most species tested in both growth media. Here, 1000 ppm GA with a 15-day cold, moist stratification showed considerable success with P. reptans.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 29, 2023
- Accession Number
- AD1213589
Entities
People
- Franz J. Lichtner
- Nadia A. Podpora
- Nicole A. Wuerslin
- Simone S. Whitecloud
Organizations
- Engineer Research and Development Center