SMALL GRAINS GENETICS AND GERMPLASM ENHANCEMENT
Location: Small Grains and Potato Germplasm Research
Title: Registration of ‘Transit’ High ß-glucan Spring Barley
Submitted to: Crop Science
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: July 15, 2011
Publication Date: September 1, 2011
Citation: Obert, D.E., Hang, A., Hu, G., Burton, C.S., Satterfield, K.L., Evans, C.P., Jackson, E.W., Windes, J. 2011. Registration of ‘Transit’ High ß-glucan Spring Barley. Crop Science. Vol. 5 No. 3, p. 270-272.
Interpretive Summary: Barley is an important crop to producers in the Intermountain west area of the US, and specifically Idaho. The acreage devoted to barley has remained steady, and recent increases in price should result in an increase in barley acreage in Idaho and Montana.
The release of Transit will provide producers with a variety with improved yield potential and beta-glucan content compared to the current varieties CDC Alamo and Azhul.
Transit was evaluated in replicated yield trials for agronomics across multiple environments and years in Idaho. The data shows that it has superior yield potential compared to the current industry standard.
Transit is expected to be adapted to both irrigated and dry land regions of Idaho.
DE Obert, An Hang (retired), G Hu, C. Burton, CE Evans, K Satterfield, and EW Jackson USDA-ARS Small Grains and Potato Research Facility, 1691 South 2700 West, Aberdeen, ID 83210; JM Windes, University of Idaho, Idaho Falls Res. and Ext. Center, 1776 Science Center Dr., Idaho Falls, ID 83402-1575.
Transit’ (Reg. No. ______PI ); a two-rowed spring high ß-glucan barley (Hordeum vulgare L.) was developed and submitted for release in 2009 by the Agricultural Research Service-USDA, Aberdeen, ID, in cooperation with the University of Idaho Agricultural Experiment Station. Transit is a selection from the cross 10/Azhul//CDC Alamo. 10 is a selection from composite cross XXXII made by Dr Tom Ramage (USDA-ARS, Retired). Azhul is a six-rowed high ß-glucan germplasm released by the ARS and Arizona Agricultural Experiment Station and is the progenitor of most high BG cultivars and germplasm. Azhul was developed by the mutation of line 76-19-7 with diethyl sulfate. 76-19-7 has the pedigree CCXXXII/’Arimont’//’Westbar’. CDC Alamo, tested as HB340, has the pedigree SB85750/Azhul.
Across 18 locations from 2007-09, Transit averaged 111 percent of CDC Alamo and 66 percent of Baronesse. Across 12 locations from 2007-09, six of both irrigated and rain-fed, Transit averaged 72 percent of Salute. Across ten irrigated locations in 2007-09, Transit averaged 116 percent of CDC Alamo and 70 percent of Baronesse. Across seven irrigated locations from 2008-09, Transit averaged 77 percent of Salute. Across eight rain-fed locations from 2007-09, Transit averaged 103 percent of CDC Alamo and 60 percent of Baronesse. Across seven rain-fed locations from 2008-09, Transit averaged 64 percent of Salute.
Across 10 locations from 2008-09, Transit averaged 9.9 percent BG compared to 7.2, 3.2, and 5.8 for CDC Alamo, Baronesse, and Salute, respectively. Under both irrigated and non-irrigated conditions, Transit had significantly higher levels of ß-g than CDC Alamo. Under both irrigated and non-irrigated conditions, CDC Alamo had significantly higher levels of ß-g than Salute. Based on the percentage ß-g and grain yield across 10 locations, yields of ß-g expressed as Kg ha-1 were 365, 232, 301, and 207 for Transit, CDC Alamo, Salute, and Baronesse, respectively.
Transit is similar to CDC Alamo for maturity, as both averaged 185 (Julian days) to heading. Transit is significantly later than Baronesse, which averaged 180 days, and Salute, which averaged 179 days. Straw strength is similar to CDC Alamo, Baronesse, and Salute, as none had significant levels of lodging (Table 2). Transit has a two-rowed lax, semi-nodding spike. Awns are long and rough. The glume is pronounced without hairs. The kernel has pearl colored aleurone, lacks rachilla hairs, and the crease is tightly closed the entire length of the kernel. The kernel is mid to large, plump, and symmetrical.
Breeder and foundation seed of Transit will be maintained by the Idaho Agricultural Experiment Station, Foundation Seed Program. Requests for seed should be directed to the Coordinator, Foundation Seed Program, College of Agriculture, Kimberly Research and Extension Center, 3793 N 3600 E, Kimberly, ID 83341. Small quantities are also available for research purposes from the USDA-ARS National Small Grains Collection, Aberdeen, ID. It is requested that appropriate recognition of source be given when this cultivar contributes to research or development of new germplasm or cultivar.