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Research ArticleRefereed Research

Germination response of curlycup gumweed seed to oxygenated water treatment

Derek Tilley and Terron Pickett
Native Plants Journal March 2021, 22 (1) 4-12; DOI: https://doi.org/10.3368/npj.22.1.4
Derek Tilley
USDA Natural Resources Conservation Service Aberdeen Plant Materials Center PO Box 296 Aberdeen, ID 83210
Roles: Plant Materials Center Manager
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  • For correspondence: [email protected]
Terron Pickett
USDA Natural Resources Conservation Service Aberdeen Plant Materials Center PO Box 296 Aberdeen, ID 83210
Roles: Plant Materials Center Manager
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  • For correspondence: [email protected]
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Abstract

Seed germination in an oxygenated water bath has been shown to be effective at reducing or eliminating dormancy barriers of some native western North American plant species; however, its full utility is not known. Particularly lacking is information on the effects of oxygenated water treatments on native forbs with physiological dormancy. Curlycup gumweed (Grindelia squarrosa (Pursh) Dunal [Asteraceae]) is a commonly occurring, early seral forb that is native to arid and semi-arid habitats in the Intermountain West and is used in wildlife habitat and other rangeland planting practices. We compared germination rates and final germination percentage of curlycup gumweed collections from 5 locations in the Intermountain Region exposed to 4 germination treatments: 1) oxygenated water bath; 2) non-oxygenated water bath; 3) 90-d cold-moist stratification; and 4) a non-treated control. Germination rates and final germination percentages after 35 d in oxygenated water bath treatments were equal to or greater than those from the 90-d stratification for all 5 accessions. Seed priming in oxygenated water treatments appears to be feasible for quickly and uniformly germinating seed in a laboratory environment with the possibility of expanding the technique for field settings.

KEY WORDS
  • seed priming
  • seed dormancy
  • propagation
  • forbs
  • restoration
  • Asteraceae
NOMENCLATURE
  • Plants: USDA NRCS (2018)
  • Insects, Birds: ITIS (2020)
  • Copyright © 2021 the Board of Regents of the University of Wisconsin System

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Native Plants Journal: 22 (1)
Native Plants Journal
Vol. 22, Issue 1
20 Mar 2021
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Germination response of curlycup gumweed seed to oxygenated water treatment
Derek Tilley, Terron Pickett
Native Plants Journal Mar 2021, 22 (1) 4-12; DOI: 10.3368/npj.22.1.4

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Germination response of curlycup gumweed seed to oxygenated water treatment
Derek Tilley, Terron Pickett
Native Plants Journal Mar 2021, 22 (1) 4-12; DOI: 10.3368/npj.22.1.4
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More in this TOC Section

  • Scarification and pre-chilling requirements for germination of the native forb Utah trefoil (Lotus utahensis Ottley)
  • Using herbarium collections and species observation databases to assess the conservation status of prairie dropseed in Minnesota
  • Impact of biostimulant and cultural factors on whorled mountainmint (Pycnanthemum verticillatum (Michx.) Pers. var. pilosum (Nutt.) Cooperr.): growth performance and assessment of arthropod visitation
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Keywords

  • seed priming
  • seed dormancy
  • propagation
  • forbs
  • restoration
  • Asteraceae
  • Plants: USDA NRCS (2018)
  • Insects, Birds: ITIS (2020)
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