title: Factors influencing germination of a functionally important grassland plant, Iris tenax.
abstract: Grassland prairies of western Oregon and Washington are among the most endangered ecosystems in the United States. Active management and restoration are needed to promote biodiversity in the region. To support plant production for use in habitat restoration, we developed germination protocols for greenhouse propagation of Iris tenax (Oregon iris). Dormancy was most effectively overcome (63% germination) by four weeks of warm stratification at 20/30°C followed by 6-12 weeks of cold stratification at 5°C suggesting that I. tenax may have morphophysiological dormancy. This result was consistent across multiple source populations.
authors.affiliation: Department of Botany and Plant Pathology, Oregon State University, Corvallis, Oregon, United States of America.
authors.forename: Katherine D
authors.initials: KD
authors.lastname: Jones
authors.affiliation: Department of Botany and Plant Pathology, Oregon State University, Corvallis, Oregon, United States of America ; Institute for Applied Ecology, Corvallis, Oregon, United States of America.
authors.forename: Thomas N
authors.initials: TN
authors.lastname: Kaye
mesh_terms: D000222:Adaptation, Physiological; D003247:Conservation of Natural Resources; D017753:Ecosystem; D018525:Germination / Q000502:physiology*; D027621:Iridaceae / Q000502:physiology*; D009922:Oregon; D057445:Plant Dormancy; D012639:Seeds / Q000502:physiology*; D013696:Temperature; D014861:Washington