Citation
Young, J. A., & Evans, R. A. (1976). Stratification of bitterbrush seeds. Journal of Range Management, 29(5), 421-425.Publisher
Society for Range ManagementJournal
Journal of Range ManagementDOI
10.2307/3897157Additional Links
https://rangelands.org/Abstract
The influence of temperature and moisture availability during stratification on the subsequent germination of bitterbrush (Purshia tridentata) seeds was investigated. The threshold for adequate stratification temperatures was abrupt. Temperatures above 5 degrees C were too warm and below 0 degrees C, too cold for stratification; 2 degrees C was optimum for the longest duration. Prolonged stratification resulted in decreased viability, apparently from microbial activity and early germination. Stratification in osmotic solutions produced with polyethylene glycol was totally ineffective. Soil water stress reduced the effectiveness of stratification, especially with sand as a substrate. Any departure from optimum temperature and moisture regimes prolonged the time required for stratification or negated any effect of the stratification treatment.Type
textArticle
Language
enISSN
0022-409Xae974a485f413a2113503eed53cd6c53
10.2307/3897157