Skip to Main Content
Due to a lapse in federal funding, this USDA website will not be actively updated. Once funding has been reestablished, online operations will continue.
Seed germination biology of Intermountain populations of fourwing saltbush (Atriplex canescens: Chenopodiaceae)Author(s): Susan E. Meyer; Stephanie L. Carlson
Source: In: Sosebee, Ronald E.; Wester, David B.; Britton, Carlton M.; McArthur, E. Durant; Kitchen, Stanley G., comps. Proceedings: Shrubland dynamics -- fire and water; 2004 August 10-12; Lubbock, TX. Proceedings RMRS-P-47. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 153-162.
Publication Series: Proceedings (P)
Station: Rocky Mountain Research Station
PDF: View PDF (855 B)
DescriptionFourwing saltbush (Atriplex canescens) is a widely distributed shrub of semiarid western North America. We studied viability and germinability of fourwing saltbush seeds over 10 years for collections from 23 Intermountain populations. Fruit fill averaged 53 percent, and 96 percent of filled fruits contained viable seeds even after 6 years of laboratory storage. Seed collections were generally dormant to some degree at harvest and lost dormancy via two processes, moist chilling and after-ripening in dry storage. Prolonged chilling (24 wks) substituted for dry after-ripening, resulted in germination percentages similar to those obtained without chilling after 2 years of storage. Collections from warm desert habitats were generally least dormant, while collections from pinyon-juniper and mountain brush habitats were highly dormant. But these trends were not very strong. Seeds of the diploid population from Jericho Dunes were essentially nondormant at harvest, while those from a population near Page, Arizona, were essentially completely dormant. Unchilled seeds did not germinate to any degree until tested after 10 years of storage. Patterns of dormancy loss suggest that this species is opportunistic and generally able to establish in response to either winter or summer precipitation. In addition, its seeds probably form persistent seed banks in the field.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationMeyer, Susan E.; Carlson, Stephanie L. 2007. Seed germination biology of Intermountain populations of fourwing saltbush (Atriplex canescens: Chenopodiaceae). In: Sosebee, Ronald E.; Wester, David B.; Britton, Carlton M.; McArthur, E. Durant; Kitchen, Stanley G., comps. Proceedings: Shrubland dynamics -- fire and water; 2004 August 10-12; Lubbock, TX. Proceedings RMRS-P-47. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 153-162.
Keywordswildland shrubs, fire, water, fourwing saltbush, Atriplex canescens
- Polyploidy enhances the occupation of heterogeneous environments through hydraulic related trade-offs in Atriplex canescens (Chenopodiaceae)
- Chromosome races of fourwing saltbush (Atriplex canescens), Chenopodiaceae
- Fourwing saltbush (Atriplex canescens) seed transfer zones
XML: View XML