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ARS Home » Pacific West Area » Pullman, Washington » WHGQ » Research » Publications at this Location » Publication #374395

Research Project: Improving Control of Stripe Rusts of Wheat and Barley through Characterization of Pathogen Populations and Enhancement of Host Resistance

Location: Wheat Health, Genetics, and Quality Research

Title: Registration of ‘Scorpio’ hard red winter wheat

Author
item CARTER, A - Washington State University
item BALOW, K - Washington State University
item SHELTON, G - Washington State University
item BURKE, A - Washington State University
item HAGEMEYER, K - Washington State University
item STOWE, A - Washington State University
item WORAPONG, J - Washington State University
item HIGGINBOTHAM, R - Highline Grain Growers, Inc
item Chen, Xianming
item ENGLE, D - US Department Of Agriculture (USDA)
item MURRAY, T - US Department Of Agriculture (USDA)
item Morris, Craig

Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 6/27/2020
Publication Date: N/A
Citation: N/A

Interpretive Summary: The development of hard red winter (HRW) wheat varieties for the Pacific Northwest region of the United States has been challenged in recent years by both cultural and environmental changes that have had an impact on creating a successful variety in the >500 mm average annual precipitation zones of eastern Washington State. The use of nitrogen fertilizer, an increase in no-till production, and farming on previously forested land have all lead to the decrease in soil pH to a level that can be toxic to wheat, especially in already compromised soils such as previously forested land. The objective of this research was to develop a HRW variety that combines tolerance to low pH soils with other important traits such as high yield potential, high grain volume weight, high grain protein concentration, acceptable end-use quality, winter hardiness, and stripe rust resistance. ‘Scorpio’ HRW wheat was developed and released in March 2019 by the Agricultural Research Center of Washington State University. Scorpio is a semi-dwarf cultivar adapted for the high rainfall wheat production regions of Washington State. Scorpio is tolerant to low pH soils, has high-temperature adult-plant resistance to stripe rust, is short in height, and has mid-season maturity, high grain volume weight, high grain protein concentration, and high grain yield potential. Scorpio has end-use quality properties comparable to those of ‘LCS Jet’, ‘Keldin’, and ‘Whetstone’, and acceptable for both domestic and export markets.

Technical Abstract: The development of hard red winter (HRW) wheat (Triticum aestivum L.) cultivars for the Pacific Northwest region of the United States has been challenged in recent years by both cultural and environmental changes that have had an impact on creating a successful variety in the >500 mm average annual precipitation zones of eastern Washington State. The use of nitrogen fertilizer, an increase in no-till production, and farming on previously forested land have all lead to the decrease in soil pH to a level that can be toxic to wheat, especially in already compromised soils such as previously forested land. The objective of this research was to develop a HRW cultivar that combines tolerance to low pH soils with other important traits such as high yield potential, high grain volume weight, high grain protein concentration, acceptable end-use quality, winter hardiness, and stripe rust resistance (caused by Puccinia striiformis Westend. f. sp. tritici Erikss.). ‘Scorpio’ (Reg. No. CV-xxxx, PI xxxxxx) HRW wheat was developed and released in March 2019 by the Agricultural Research Center of Washington State University. Scorpio was tested under the experimental designations HRW11064-1-DH-1-4 and WA8268, which were assigned through progressive generations of advancement. Scorpio is a semi-dwarf cultivar adapted for the high rainfall wheat production regions of Washington State. Scorpio is tolerant to low pH soils, has high-temperature adult-plant resistance to stripe rust, is short in height, has mid-season maturity, high grain volume weight, high grain protein concentration, and high grain yield potential. Scorpio has end-use quality properties comparable to those of ‘LCS Jet’, ‘Keldin’, and ‘Whetstone’, and acceptable for both domestic and export markets.