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Research ArticleRefereed Research

Overcoming seed dormancy in 2 Rocky Mountain native shrubs: Ceanothus velutinus and Cercocarpus montanus

Asmita Paudel, Youping Sun, Larry A Rupp, John Carman and Stephen L Love
Native Plants Journal, September 2020, 21 (3) 353-358; DOI: https://doi.org/10.3368/npj.21.3.353
Asmita Paudel
Department of Plants, Soils, and Climate, Utah State University, 4820 Old Main Hill, Logan, UT 84322
Roles: Graduate Student
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  • For correspondence: [email protected]
Youping Sun
Department of Plants, Soils, and Climate, Utah State University, 4820 Old Main Hill, Logan, UT 84322
Roles: Assistant Professor
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Larry A Rupp
Department of Plants, Soils, and Climate, Utah State University, 4820 Old Main Hill, Logan, UT 84322
Roles: Professor
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John Carman
Department of Plants, Soils, and Climate, Utah State University, 4820 Old Main Hill, Logan, UT 84322
Roles: Professor
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Stephen L Love
Aberdeen Research & Extension Center, University of Idaho, 1693 S 2700 W, Aberdeen, ID 83210
Roles: Professor
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Abstract

Ceanothus velutinus Douglas ex Hook. (snowbrush ceanothus [Rhamnaceae]) and Cercocarpus montanus Raf. (alderleaf mountain mahogany [Rosaceae]) are native species with urban landscape value and potential to create unique aesthetics as well as to conserve water. Propagation protocols for these native species are not well established. Because of dormancy, seed propagation requires scarification and (or) stratification. We designed a study to further define protocols necessary to consistently produce high rates of germination for these 2 species. Ceanothus velutinus seeds were scarified in hot water at 50, 70, or 90 °C (122, 158, or 194 °F) and soaked with gibberellic acid (GA3) at 0, 50, 250, or 500 mg/l (0, 50, 250, or 500 ppm) for 24 h before stratification for 1, 2, or 3 mo. Seeds of C. velutinus stratified for 2 mo after being scarified at 90 °C and treated with 500 mg/l (500 ppm) GA3 had the greatest germination percentage (74.2 ± 2.0%). Percent germination was the lowest when seeds were scarified at 50 °C (122 °F) and treated without GA3 but with 2 mo stratification. Cercocarpus montanus seeds were treated with GA3 at 0, 50, 250, or 500 mg/l (0, 50, 250, or 500 ppm) and stratified for 1, 2, or 3 mo. Seed germination of C. montanus increased as stratification time increased. Seeds dipped in 50 mg/l (50 ppm) GA3 and stratified for 2 mo had the greatest germination percentage (64.2 ± 3.6%).

Paudel A, Sun Y, Rupp LA, Carman J, Love SL. 2020. Overcoming seed dormancy in 2 Rocky Mountain native shrubs: Ceanothus velutinus and Cercocarpus montanus. Native Plants Journal 21(3):353–358.

KEY WORDS
  • GA3
  • germination
  • physical dormancy
  • physiological dormancy
  • scarification
  • stratification
  • Rhamnaceae
  • Rosaceae
  • © 2020 by the Board of Regents of the University of Wisconsin System

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Native Plants Journal: 21 (3)
Native Plants Journal
Vol. 21, Issue 3
21 Sep 2020
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Overcoming seed dormancy in 2 Rocky Mountain native shrubs: Ceanothus velutinus and Cercocarpus montanus
Asmita Paudel, Youping Sun, Larry A Rupp, John Carman, Stephen L Love
Native Plants Journal Sep 2020, 21 (3) 353-358; DOI: 10.3368/npj.21.3.353

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Overcoming seed dormancy in 2 Rocky Mountain native shrubs: Ceanothus velutinus and Cercocarpus montanus
Asmita Paudel, Youping Sun, Larry A Rupp, John Carman, Stephen L Love
Native Plants Journal Sep 2020, 21 (3) 353-358; DOI: 10.3368/npj.21.3.353
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Keywords

  • GA3
  • germination
  • physical dormancy
  • physiological dormancy
  • scarification
  • stratification
  • Rhamnaceae
  • Rosaceae
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