Skip to main content
ARS Home » Pacific West Area » Pullman, Washington » WHGQ » Research » Publications at this Location » Publication #317351

Research Project: Improved Control of Stripe Rust in Cereal Crops

Location: Wheat Health, Genetics, and Quality Research

Title: Registration of ‘Muir’ spring feed barley

Author
item MURPHY, K - Washington State University
item ULLRICH, S - Washington State University
item WOOD, M - Washington State University
item MATANGUIHAN, J - Washington State University
item JITKOV, V - Washington State University
item GUY, S - Washington State University
item Chen, Xianming
item BROUWER, B - Washington State University Extension Service
item LYON, S - Washington State University Extension Service
item JONES, S - Washington State University Extension Service

Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 3/9/2015
Publication Date: 8/21/2015
Citation: Murphy, K.M., Ullrich, S.E., Wood, M.B., Matanguihan, J.B., Jitkov, V.A., Guy, S.O., Chen, X., Brouwer, B.O., Lyon, S.R., Jones, S.S. 2015. Registration of ‘Muir’ spring feed barley. Journal of Plant Registrations. 9(3):283-287.

Interpretive Summary: ‘Muir’ is a two-row, spring, hulled feed barley cultivar developed and released in 2013 by Washington State University (WSU). Muir was derived from the cross ‘Baronesse’/‘Bob’ and selected through singleseed descent and pedigree breeding methods. 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 (less than 16 inches annual precipitation) testing locations, Muir had a mean grain yield 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; 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.

Technical 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 singleseed 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.