|Seabourn, Bradford - Brad|
Submitted to: Crop Science
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 1/11/2006
Publication Date: 7/1/2006
Citation: Carver, B., Hunger, R., Klatt, A., Edwards, J., Porter, D.R., Verchot-Lubicz, J., Martin, B., Seabourn, B.W., Rayas-Duarte, P. 2006. Registration of 'Deliver' wheat. Crop Sci. p.1819-1820. Interpretive Summary: ‘Deliver’ hard red winter wheat (released in 2004) is a semidwarf, awnletted cultivar with unique and competitive ability to deliver in grain-only, graze-plus-grain, and forage-plus-hay management systems. Its targeted production area extends throughout Oklahoma and the southern Great Plains. Flag leaves of Deliver at the boot stage are blue-green, recurved, twisted, and waxy. Spikes are white-chaffed, apically awnletted, tapering, dense, and recurved at harvest-maturity. Kernels are red, hard textured, ovate, and they have a narrow, shallow crease, rounded cheeks, and small germ. In statewide breeder trials across 30 site-years from 1998 to 2002, Deliver averaged 3790 kg ha^-1, exceeding the mean of 2174 by 50 kg ha^-1. Across 15 site-years during 1997, 1998, and 2002, Deliver (4170 kg ha^-1) exceeded the mean of Jagger by 320 kg ha-1. Across 31 grain-only sites of the 2003 SRPN, Deliver was the eighth highest yielding entry with a mean yield of 4650 kg ha^-1. In the OWVT (41 site-years), grain yield of Deliver averaged 3410 kg ha^-1, compared with 3180 kg ha^-1 for 2174 and 3510 kg ha^-1 for Jagger. For test weight, Deliver has exceeded acceptable standards with a mean hectoliter weight in the OWVT (41 site-years) of 78.7 kg hL^-1. Deliver has above-average kernel size and below-average kernel hardness averaging 31.9 mg kernel weight, 2.36 mm kernel diameter, and 57 for kernel hardness index. From the same environments measured with the Quadromat Senior mill, Deliver performed well for straight-grade flour yield (645 g kg^-1) compared with the high-yielding check, Ok101 (635 g kg-^1). Hence, Deliver has desirable physical quality attributes based on SKCS and experimental milling performance. Also from those 27 environments, mean wheat protein content was 120 g kg^-1 for Deliver and 112 g kg^-1 for Ok101. Dough strength based on the mixograph is slightly superior to Ok101. From 27 breeder trials spanning 1999 to 2003, Deliver had a moderately long mixing time of 7.0 min (indicative of Karl), a mixing tolerance score of 4.8 on a 1-to-10 (low-to-high) scale, and mixogram curve width at 2 min past peak development of 12.8 mm. Respective scores for Ok101 were 5.1 min, 4.7, and 8.9 mm. Overall milling and baking quality was rated acceptable in the 2003 evaluation program of the Wheat Quality Council. On a 0-to-6 scale, mean scores were 3.60 for Deliver and 3.69 for the check cultivar, Ok102. Straight-grade flour yield of Deliver (with comparisons to Ok102 as the check sample) was 733 g kg^-1 (699 g kg^-1) with 3.2 g kg^-1 flour ash (4.4 g kg^-1).
Technical Abstract: ‘Deliver’ (Reg. No. CV-_______, PI 639232) hard red winter wheat (Triticum aestivum L.) was released to certified seed growers with permission of the Oklahoma Agricultural Experiment Station (AES) and the USDA-ARS in 2004. Deliver, an awnletted cultivar, was named for its unique and competitive ability to deliver in grain-only, graze-plus-grain, and forage-plus-hay management systems. Its targeted production area extends throughout Oklahoma and the southern Great Plains except in areas limited by soil acidity and aluminum toxicity. Deliver was selected from the single cross, OK91724/’Karl’, in which Karl is a HRW cultivar developed by the Kansas AES and USDA-ARS and released in 1988. OK91724 is a non-released breeding line developed by the Oklahoma AES from the cross, ‘Yantar’/2*’Chisholm’. Deliver is semidwarf and intermediate in plant stature relative to most HRW wheat cultivars. Its mature-plant height (85 cm in Oklahoma) is within 2 cm of ‘Jagger’, ‘2174', and ‘Ok101'. Based on field observations under natural infection in Oklahoma and cooperative evaluations in the USDA-ARS regional nursery program, Deliver has adult-plant resistance to wheat leaf rust races currently present in Oklahoma. Based on single-kernel characterization system (SKCS) data recorded from 27 breeder trials from 1999 to 2003, Deliver has above-average kernel size and below-average kernel hardness. Dough strength based on the mixograph is slightly superior to Ok101. Overall milling and baking quality was rated acceptable in the 2003 evaluation program of the Wheat Quality Council.