Volume 61 Number 4 Article 27
Year 2007 Month 10
Title: Seed Stratification of an Intermountain West Chokecherry Ecotype
Authors: L. Rowley, N. Phillips and B. Black
Abstract:
An experiment was carried out to evaluate the effects of stratification treatments on the germination of an
Intermountain West ecotype of chokecherry (Prunus virginiana L.). Seeds from a single wild stand were cleaned
and subjected to one of 12 treatments.
Treatments included stratification at 3ºC for durations ranging from 0 to
24 weeks.
Additional treatments included exposure to GA3 during a 12-week stratification, or two stratification
cycles interrupted by 4 weeks at 20ºC. Each treatment consisted of four replicates of 50 seeds each.
None of the
seeds stratified for 4 weeks or less germinated after 12 weeks at 20ºC. Germination percentage increased with
stratification time from 8 to 16 weeks.
With the 20 and 24 week stratification treatments, much of the germination
occurred during the 3ºC stratification period.
Interrupted stratification cycles did not increase germination percentages.
Treatment with GA3 had no significant effect on germination percentage.
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