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a USDA-ARS, Small Grains and Potato Research Facility, 1691 South 2700 West, Aberdeen, ID 83210
b USDA-ARS (Retired), 615 Calder Ave., American Falls, ID 83211
c University of Idaho, Idaho Falls Res. and Ext. Center, 1776 Science Center Dr., Idaho Falls, ID 83402-1575
d University of Idaho, Tetonia Res. and Ext. Center, 888 West Hwy 33, Newdale, ID 83436
* Corresponding author (dobert{at}uidaho.edu).
‘Tetonia’ two-rowed spring barley (Hordeum vulgare L.), (Reg. no. CV-334, PI 646199) was developed by the Agricultural Research Service, United States Department of Agriculture, and the Idaho Agricultural Experiment Station and released in January 2007. Tetonia was tested under the experimental designation 98Ab11720 and has the pedigree 85Ab2323/‘Baronesse’. The parent 85Ab2323 has the pedigree 79Ab10542/‘Crystal’ (Wesenberg et al., 1991). 79Ab10542 has the pedigree 60Ab1810-53/‘Hector’ (Wells, 1973). 60Ab1810-53 is one of 35 F11:12 lines which were composited to form the cultivar ‘Klages’ (Wesenberg et al., 1974) and has the pedigree ‘Betzes’/‘Domen’. Baronesse, a two-rowed feed barley, developed by the company Nordsaat in Germany and marketed in the U.S. by WestBred, LLC (Bozeman, MT) has the pedigree ‘Mentor’/‘Minerva’//Vada mutant/4/‘Carlsberg’/‘Union’//‘Opavsky’/‘Salle’/3/‘Ricardo’/5/‘Oriol’/6153P40.
The spike of Tetonia is moderately lax, medium-long, and nodding. Its kernels have white aleurone and long rachilla hairs. Its hull is smooth to slightly wrinkled and it has rough awns.
The cross that produced Tetonia was made in 1993 and 100 F5 spikes were selected in 1997 following pedigree selection in the F2 through F4 generations for resistance to lodging, shattering, and favorable plant and spike type under irrigation at Aberdeen, ID. These spikes were grown as progeny rows in 1998 and the row designated no. 11720 was selected because of its resistance to lodging, grain shattering, and favorable plant and spike type. Tetonia was evaluated in a non-replicated yield trial at Aberdeen, ID in 1999 and entered in replicated yield trials at Aberdeen and Tetonia, ID beginning in 2000. Tetonia entered preliminary statewide trials in 2001 and elite trials throughout Idaho in 2003. Tetonia was tested in the Western Regional Dryland Spring Barley Nursery (WRDSBN) in 2004–05 and University of Idaho small grains extension trials in 2004–06.
Tetonia has shown favorable yield potential compared to Baronesse, which is the predominant two-rowed feed barley in Idaho. In ARS and cooperative University of Idaho trials across 41 irrigated and rain fed locations throughout Idaho from 2000–06, Tetonia yielded 102% of Baronesse. In 14 irrigated and rain-fed trials conducted by the University of Idaho extension from 2004–06, Tetonia averaged 101% of Baronesse for yield. Tetonia was the top performer in the 2004 WRDSBN where it averaged 111% of the test mean across 11 locations in Idaho, Montana, North Dakota, Utah, and Saskatoon, SK, Canada. (Baronesse was not grown as a check in the 2004 WRDSBN). Tetonia is best adapted to Idaho and Montana, and in the five WRDSBN locations in these two states it was also the top performer, averaging 115% of the test mean. In the 2005 WRDSBN, Tetonia had the second best performance across eight locations in Idaho, Montana, and North Dakota and yielded 101% of Baronesse. Across the five locations in Idaho and Montana, Tetonia was the top performer and yielded 106% of Baronesse. Across 63 location-years from ARS, University of Idaho, and regional trial evaluations, Tetonia yielded 102% of Baronesse. Across 50 location-years from ARS, University of Idaho, and regional trial evaluations, Tetonia and Baronesse each had test weights of 66.8 kg hL–1. Across 50 location-years Tetonia averaged 80.0% plump kernels compared to 84.4% for Baronesse. Kernels retained on a sieve with 0.24 by 1.9 cm slotted openings (American Society of Brewing Chemists, 1992) were considered plump.
Across 43 location-years, Tetonia headed two days later than Baronesse and had a lodging rating (1–9 scale with 1 = best, 9 = worst) of 1.4 compared to 1.5 for Baronesse. Across 37 location-years it was nearly identical in height to Baronesse, being on average 0.2 cm taller.
In the 2004 and 2005 WRDSBN foliar disease ratings were taken on a 0 (resistant) to 9 (very susceptible) scale. In the 2004 WRDSBN disease ratings were taken for spot blotch (caused by Cochliobolus sativus) at Saskatoon and Melfort, SK, Canada. Tetonia had a rating of 7.0 and 5.0 compared to 5.0 and 5.5 for ‘Steptoe’ (Muir and Nilan, 1973) at Saskatoon and Melfort, respectively. Ratings on net blotch (caused by Pyrenophora teres f. teres) were taken at Melfort, SK, CA, and Fargo and Langdon, ND. Again, both cultivars were similar with reactions for Tetonia being 2.0, 2.7, and 5.7, compared to 3.0, 2.4, and 4.0 for Steptoe at the three locations, respectively. In the 2005 WRDSBN reaction to net blotch and barley stripe rust (caused by Puccinia striiformis f. sp. hordei) were taken at Tammany, ID. For Tetonia, Baronesse, and Steptoe, respectively, the stripe rust percentage diseased leaf area was 70, 60, and 80 and the net blotch rating was 5.7, 4.0, and 5.0.
Original breeder seed was derived by compositing seed from 41 F8:9 headrows selected for uniform phenotype. Breeder and Foundation seeds of Tetonia will be maintained by the Idaho Agricultural Experiment Station, Foundation Seed Program, Kimberly Research and Extension Center, 3793 N 3600 E, Kimberly, ID 83341. Small quantities of seeds may be obtained from the corresponding author for up to five years. It is requested that appropriate recognition of source be given when this cultivar contributes to development of new germplasm or cultivars.
Footnotes
All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the publisher. Permission for printing and for reprinting the material contained herein has been obtained by the publisher.
Received for publication March 12, 2007.
References
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