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Journal of Plant Registrations Abstract - CULTIVAR

Registration of ‘Muir’ Spring Feed Barley

 

This article in JPR

  1. Vol. 9 No. 3, p. 283-287
    unlockOPEN ACCESS
     
    Received: Jan 03, 2015
    Accepted: Mar 09, 2015
    Published: May 1, 2015


    * Corresponding author(s): kmurphy2@wsu.edu
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doi:10.3198/jpr2015.01.0001crc
  1. Kevin M. Murphy *a,
  2. Steven E. Ullricha,
  3. Max B. Wooda,
  4. Janet B. Matanguihana,
  5. Vadim A. Jitkova,
  6. Stephen O. Guya,
  7. Xianming Chenb,
  8. Brook O. Brouwerc,
  9. Steven R. Lyonc and
  10. Stephen S. Jonesc
  1. a Dep. of Crop and Soil Sciences, Washington State Univ., Pullman, WA 99164-6420
    b USDA–ARS
    c Northwestern Washington Research and Extension Center, Washington State Univ., Mount Vernon, WA 98273

Abstract

‘Muir’ (Reg. No. CV-357, PI 674172) is a two-row, spring, hulled feed barley (Hordeum vulgare L.) cultivar developed and evaluated as 07WA-601.6, and released in 2013 by Washington State University (WSU). Muir was derived from the cross ‘Baronesse’/‘Bob’ and selected through single-seed descent from F2 to F4 and pedigree breeding methods from F5 to F6. Muir was tested in multi-environment trials at 8 to 10 locations per year by the WSU Variety Testing Program from 2011 to 2014. In the low rainfall (<400 mm annual precipitation) testing locations, Muir had a mean grain yield (4787.0 kg ha−1) that was higher than those of check cultivars Baronesse, Bob, and Lyon. Muir showed head emergence significantly earlier than Baronesse, Bob, and ‘Lenetah’ and was 3.3 cm taller than Baronesse and 5.5 cm shorter than ‘Champion’ across low rainfall zone locations. Muir is resistant to currently prevalent races of the stripe rust pathogen (Puccinia striiformis Westend. f. sp. hordei Erikss.); by comparison, commonly grown cultivars Baronesse, Bob, and Champion are rated as moderately resistant, ‘Harrington’, Lenetah, and Lyon are rated as moderately susceptible, and ‘CDC Copeland’ and ‘CDC Meredith’ are rated as susceptible. Muir was released on the basis of its excellent stripe rust resistance, high grain yield, and agronomic qualities suitable for a feed barley cultivar in low rainfall zones of Washington.

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Copyright © 2015. Copyright © by the Crop Science Society of America, Inc.