Registration of ‘Sundre’ Barley

Alberta Agriculture, Food and Rural Development, Field Crop Development Centre, 5030-50 St., Lacombe, AB, T4L 1W8, Canada. Registration by CSSA. Received 6 Sept. 2006. *Corresponding author (joseph.nyachiro@gov.ab.ca). ‘S undre’ barley (Hordeum vulgare L.) (Reg. No. CV-332, PI 643445) is a six-rowed, hulled, smooth-awned, spring feed barley. It has medium-strong straw and is adapted to western Canada. Sundre was developed at the Field Crop Development Centre (FCDC) of Alberta Agriculture, Food and Rural Development (AAFRD). It was recommended by the Prairie Registration Recommending Committee for Grain–Barley and Oats Subcommittee for registration in February 2005. Sundre was registered in Canada (Reg. no. 6115) on 28 Apr. 2006. Sundre barley was named after the town of Sundre, Alberta, Canada. Sundre barley is derived from the cross H92068 (BT 636/‘Tukwa’) made at the FCDC in 1992. The line BT 636 originated from the Lacombe Research Centre, Agriculture and AgriFood Canada (AAFC). The pedigree of BT 636 is LA659-207/BT 324. LA659-207/BT 324 is a sister line of ‘Diamond’ (Kaufmann and Kibite, 1985), which originated from the cross of ‘Galt’/ ‘Unitan’ (Harder and Legge, 2000; Martin et al., 1991). Galt (Wells, 1967) is a Canadian cultivar, and Unitan (Eslick and Hockett, 1965) is an introduced cultivar to Canada from the USA. Line BT 324 is from the cross of NDB 135/Br. 6355-14. Line NDB 135 is a North Dakota six-rowed feed barley developed in the 1960s that was noted then for its good leaf disease resistance. The pedigree of NDB 135 is Dickson/3/CIho 4738//Traill/UM 570 (Peterson et al., 1968; Lambert, 1958). The pedigree of UM 570 is ‘Newal’ (CIho 6088)/‘Peatland’ (CIho 2613)//‘Montcalm’ (CIho7149). Line Br. 6355-14 was developed in 1963 at the Brandon Research Centre, AAFC (likely a six-rowed malt cross), whose pedigree is not traceable. Tukwa was released by the FCDC and registered in 1992 (Helm et al., 1996). Tukwa originated from the cross of I74161/ ‘Hiproly’. Hiproly (PI 60693) is a two-rowed hulless cultivar that originated from Ethiopia. The line I74161 (FCDC accession code number) was introduced as DL69 (PI383854) to the FCDC barley program from the International Centre for Agricultural Research in Dry Areas (ICARDA)/International Maize and Wheat Improvement Centre (CIMMYT) program in Mexico. The line I74161 is six-rowed, hulled, semi-dwarf barley originally developed in Punjab, India from the cross of BG1/Mexican-5-13. Sundre was evaluated as line H92068001 in the FCDCAAFRD barley yield trials and as BT 566 in the Western Cooperative Six-Rowed Barley trials. A modifi ed pedigree-bulk breeding method was used to advance early generations of Sundre. The F2 generation was grown as a bulk population at the FCDC near Lacombe, Alberta in 1993. The whole F2 population was harvested in bulk and seed was screened for plumpness using a gravity table. About 5000 F3 seeds of Sundre were grown for one season (1993–1994) in the California winter nursery near El Centro. The F3 generation was derived from the seed of about 500 spikes selected at random from the California winter nursery. The selections from the California winter nursery were grown at Lacombe for subsequent bulking, and selection in F4 and F5 from 1994 to 1996. In 1996, 200 spikes were selected from the F6 bulk population and grown in 1997 as individual F7 singlespike-derived progeny rows. Sundre was selected from these single-spike-derived progeny rows in 1997 to enter into the fi rst yield trials in 1998 that were conducted in single replicate plots of 3-m long by 1.25 m and 8 rows at one location, Lacombe. Between 1998 and 2002, Sundre was evaluated in the FCDC– AAFRD barley fi eld trials. These trials were conducted in multiple replicated plots and at multiple locations in Alberta and Saskatchewan. In 2003 and 2004, Sundre was evaluated in the Western Cooperative Six-Rowed Barley Test conducted in three replicates and multiple locations across western Canada. In both the FCDC– AAFRD barley fi eld trials and Western Cooperative Six-Rowed Barley tests, selection and advancement of Sundre was based on grain yield, silage yield, test weight, 1000-kernel weight, kernel plumpness, maturity, lodging resistance, and resistance to scald [caused by Rhynchosporium secalis (Oud.) J.J. Davis] and smuts (caused by several Ustilago spp.). Purifi cation of Sundre was accomplished by selecting 161 F13 single-spike–derived progeny rows that were uniform in appearance and bulked to form the breeder’s seed. Sundre is a medium-height cultivar with medium lodging resistance of 2.7 (on 0–9 scale), where 0 = no lodging and 9 = severe lodging. The lodging resistance of Sundre is lower compared with 1.7 for ‘Vivar’. Sundre has an intermediate-erect Published in the Journal of Plant Registrations 1:35–36 (2007). doi: 10.3198/jpr2006.09.0567crc © Crop Science Society of America 677 S. Segoe Rd., Madison, WI 53711 USA