Spotted locoweed (Astragalus lentiginosus Dougl.), one of the principal locoweeds of western rangelands, consists of 36 varieties. The objectives of this study included the definition of some of the factors influencing seed germination of the species. Five seed collections were studied; they represented five different geographical and edaphic locations. Three varieties of spotted locoweed were represented by these collections. The seed coat of the varieties studied was impermeable to water. Seed also contained a water-soluble germination inhibitor. Germination was not affected by light. Optimal germination occurred at the temperature regime 7/13 degrees C. However, at -1/4 and 21/27 degrees C, though it was slower, high percentage germination was ultimately achieved. Although salinity inhibited germination, seed from the different sources showed different tolerances to salinity. This material was digitized as part of a cooperative project between the Society for Range Management and the University of Arizona Libraries. The Journal of Range Management archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information. Migrated from OJS platform August 2020
Scholarly peer-reviewed articles published by the Society for Range Management. Access articles on a rolling-window basis from vol. 1, 1948 up to 5 years from the current year. Formerly Journal of Range Management (JRM). More recent content is available by subscription from SRM.