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Research ArticleREFEREED RESEARCH

Effect of cold stratification on germination of 9 boreal sedges

Jean-Marie Sobze, Çağdaş Kera Yücel, Ann Smreciu and Kim Gould
Native Plants Journal, March 2019, 20 (1) 5-13; DOI: https://doi.org/10.3368/npj.20.1.5
Jean-Marie Sobze
Applied Research Chair, Plant and Seed Technologies, NAIT Center for Boreal Research, 8102 99 Avenue, Peace River, AB T8S 1R2,
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Çağdaş Kera Yücel
, Research Officer, NAIT Center for Boreal Research,
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Ann Smreciu
Director | Senior Ecologist, Wild Rose Consulting Inc, 15109 77 Avenue Edmonton, AB T5R 3B5
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Kim Gould
Reclamation Ecologist, Wild Rose Consulting Inc, 15109 77 Avenue Edmonton, AB T5R 3B5
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Abstract

Many sedge species (Carex L. [Cyperaceae]) are found in varied vegetation communities that make up the boreal forest in northwest Alberta, Canada. Sedges make up a large part of wetland vegetation and, to a lesser extent, upland communities. Until recently, few have been considered for use in reclamation or revegetation of sites disturbed by oil and gas extraction, due in part to the lack of information regarding their germination requirements. Germination of 5 upland species: Dewey sedge (Carex deweyana Schwein.), meadow sedge (C. praticola Rydb.), smallwing sedge (C. microptera Mack.), Raymond’s sedge (C. raymondii Calder), and dryspike (C. siccata Dewey) and 4 wetland species: sparseflower sedge (C. tenuiflora Wahlenb.), three-seeded sedge (C. trisperma Dewey), northern bog sedge (C. gynocrates Wormsk. ex Drejer), and tall bog sedge (C. paupercula) were evaluated following 3 cold stratifications treatments (2, 4, and 9 wk) and that of an unstratified control (0 wk). Germination (% and days to maximum germination) and synchronization index of the 9 Carex species differed following a 0, 2, 4, or 9 wk cold stratification at 4 °C (39.2 °F). For 6 sedges, very good germination (more than 75%) was achieved, whereas acceptable germination (69%) was attained for C. deweyana, and poor germination (< 20%) for C. gynocrates and C. trisperma. Further investigation will be required to understand germination requirements for the latter two.

  • Carex
  • Cyperaceae
  • dormancy
  • viability
  • revegetation
  • boreal seed
NOMENCLATURE:
  • USDA NRCS (2018)

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Native Plants Journal: 20 (1)
Native Plants Journal
Vol. 20, Issue 1
20 Mar 2019
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Effect of cold stratification on germination of 9 boreal sedges
Jean-Marie Sobze, Çağdaş Kera Yücel, Ann Smreciu, Kim Gould
Native Plants Journal Mar 2019, 20 (1) 5-13; DOI: 10.3368/npj.20.1.5

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Effect of cold stratification on germination of 9 boreal sedges
Jean-Marie Sobze, Çağdaş Kera Yücel, Ann Smreciu, Kim Gould
Native Plants Journal Mar 2019, 20 (1) 5-13; DOI: 10.3368/npj.20.1.5
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Keywords

  • Carex
  • Cyperaceae
  • dormancy
  • viability
  • revegetation
  • boreal seed
  • USDA NRCS (2018)
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