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ARS Home » Pacific West Area » Aberdeen, Idaho » Small Grains and Potato Germplasm Research » Research » Publications at this Location » Publication #87336
Title: REGISTRATION OF 88AB536-B BARLEY GERMPLASM

Author
item Wesenberg, Darrell
item BAENZIGER, P STEPHEN - UNIVERSITY OF NEBRASKA
item RASMUSSON, DONALD - UNIVERSITY OF MINNESOTA
item Burrup, Dave
item Jones, Berne

Submitted to: Crop Science
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 10/31/1997
Publication Date: N/A
Citation: N/A

Interpretive Summary: Historically essentially all malting barley production in the U.S. has been based on spring planted cultivars. All currently recommended malting barleys are spring cultivars. Winter barleys have an inherent advantage in yield over spring barleys in environments that permit winter barley production. A new winter barley selection, 88Ab536-B, was developed cooperatively by the USDA-ARS and the Idaho Agricultural Experiment Station. The selection was approved for release as germplasm by the University of Idaho Foundation Seed Stocks Committee, recognizing its superior malting quality compared to existing six-rowed winter barleys and the potential of this germplasm to help make winter malting barley a reality. Although this barley does not yield as well as existing winter feed barley varieties, it typically has a 10 to 20% yield advantage vs. spring six-rowed malting barley varieties in its area of adaptation. Early ymaturing winter barleys also have the potential to reduce irrigation requirements in comparison to spring planted barleys. The six-rowed winter barley selection 88Ab536 originated at Aberdeen as an F6 head row from the cross NE 76129/2*'Morex'. The cross was made by ARS personnel at Beltsville, Maryland and selections were made in F2 through F6 generations by ARS personnel at Aberdeen, Idaho. Selection 88Ab536 has been tested in replicated trials in Idaho since 1989, and in the Western Winter Barley Nursery and the Uniform Barley Winterhardiness Nursery over a wide range of environments in the USA. Selection 88Ab536-B has superior malting quality compared to other six-rowed winter barleys such as 'Plaisant' and 'Wintermalt', with an overall malting quality pattern similar to that of the malting quality standard, Morex.

Technical Abstract: Winter barley (Hordeum vulgare L.) selection 88Ab536-B, PI 595789, was developed cooperatively by the USDA-ARS and the Idaho Agricultural Experiment Station. The six-rowed winter barley selection originated at Aberdeen as an F6 head row from the cross NE 76129/2*'Morex'. The selection has been tested in replicated trials in Idaho since 1989,and in the Western nWinter Barley Nursery and the Uniform Barley Winterhardiness Nursery over wide range of environments in the U.S. Selection 88Ab536-B is a breeders seed composite of 36 reselections from 88Ab536 that were selected for morphological uniformity, maintaining favorable malting quality characteristics. Selection 88Ab536-B has superior malting quality compared to other six-rowed winter barleys such as 'Plaisant' and 'Wintermalt', with an overall malting quality pattern similar to that of the recurrent spring parent, Morex. Morex is the designated malting quality standard for six-rowed malting barley in the U.S. In comparison to other winter malting types, 88Ab536-B is markedly improved in having higher malt extract percentage, higher diastatic power and alpha amylase activity, and lower fine/coarse difference. In four station-years of testing in irrigated trials at Aberdeen, Idaho from 1989-90 to 1993-94, the yield of 88Ab536-B averaged 8364 kg ha-1 or 78% of 'Eight-Twelve' and 87% of 'Schuyler'. In the same trials, all three barleys were similar in test weight and lodging resistance. Eight-Twelve and Schuyler are important feed barley varieties, but not suitable for malting and brewing. In irrigated trials at Aberdeen in 1993-94 and 1995-96, 88Ab536-B averaged 104% of the yield of the European six-rowed malting barley Plaisant.