Eriogonum (umbellatum)
|
Susan Meyer Research Ecologist USDA FS - Rocky Mountain Research Station, Shrub Sciences Laboratory 735 North 500 east Provo, Utah 84606 smeyer@sisna.com www.fs.fed.us/rm/boise |
|
| Family Scientific Name: | Polygonaceae | ||
|---|---|---|---|
| Family Common Name: | Buckwheat family | ||
| Scientific Name: | Eriogonum umbellatum | ||
| Common Name: | Sulphur buckwheat | ||
| Species Code: | ERIUMB | ||
| Ecotype: | Utah 2150 to 3480m | ||
| General Distribution: | E. umbellatum is found throughout the western United States; from low elevation plains and deserts to the subalpine zone. | ||
| Propagation Goal: | plants | ||
| Propagation Method: | seed | ||
| Time To Grow: | |||
| Propagule Collection: | E. alatum flowers in early to late summer and seeds ripen in late August to early September, depending on elevation. | ||
| Propagule Processing: |
Seeds are cleaned by hand rubbing material through a 2 mm round hole screen. Caff is removed from seed by using a tabletop model blower. Achenes are stored at 20 to 22C with 30 to 40% relative humidity in paper envelopes until mid October. Achene mass averages 1.4 to 2.6 mg per 100 achenes. |
||
| Pre-Planting Treatments: |
6 prechilling treatments were used: 0,2,4,8,12,16 and 24 weeks of moist chilling at 2C in the dark. |
||
| Growing Area Preparation/ Annual Practices for Perennial Crops: |
Following chilling treatments, seeds were incubated 4 weeks under a daily temperature and photoperiod regime (12hr dark at 10C and 12hr light at 20C)with a cool flourescent light. Achenes were placed in disposable petri plates on 2 blue germination blotter papers moistened with tap water. Blotter papers were re-moistened as needed. |
||
| Establishment Phase: |
Results and Discussion: 5 collections of E. umbellatum represented 3 subspecies; they showed considerable variation in chilling requirement. The Red Canon collection was the least dormant, requiring only an 8 wk prechill to become completely germinable. the collection from alpine tundra in the Uinta mountains ( E. umbellatum ssp.portei) was the most dormant, requiring 24 weeks of chilling to lose dormancy completely and only germinated to slightly more than 50% during 24 weeks in the cold. |
||
| References: | Chilling Requirements for seed germination of 10 Utah species of perennial wild buckwheat. Meyer SE and Paulsen A. Native Plants Journal, Spring 2000, 1(1):18-24. | ||
Citation:
2001. Propagation protocol for production of Eriogonum umbellatum plants USDA FS - Rocky Mountain Research Station, Shrub Sciences Laboratory Provo, Utah. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2024/07/03). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.
