Influence of Seed Stratification and Seed Age on Emergence of Penstemon

@inproceedings{Lindgren2004InfluenceOS,
  title={Influence of Seed Stratification and Seed Age on Emergence of Penstemon},
  author={Dale T. Lindgren and Daniel M. Schaaf},
  year={2004}
}
Studies were conducted to evaluate the effect of stratifi cation and seed age on per- cent seedling emergence of Penstemon. Emergence differences occurred between the eight Penstemon selections, as well as between seed stratifi cation treatments and seed age. Seed stratifi cation signifi cantly increased emergence. Emergence varied from 0% with 1-year- old seed of Penstemon digitalis with no stratifi cation, to 72.8% emergence with 2-year-old seed of P. angustifolius with 10 weeks of stratifi… CONTINUE READING