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ARS Home » Southeast Area » Raleigh, North Carolina » Plant Science Research » Research » Publications at this Location » Publication #166513
Title: UNIFORM BARLEY WINTER HARDINESS NURSERY 2003-2004

Author
item Livingston, David
item Premakumar, Ramaswamy

Submitted to: Extension Service Bulletins
Publication Type: Research Notes
Publication Acceptance Date: 7/17/2004
Publication Date: 7/17/2004
Citation: Livingston, D.P., Premakumar, R. 2004. Uniform barley winter hardiness nursery 2003-2004. Extension Service Bulletins. p. 1-7.

Interpretive Summary: The Uniform Oat Winter Hardiness Nursery (UOWHN) is a cooperative effort of the USDA-ARS and various state Agricultural Experiment Stations to allow plant breeders to evaluate promising experimental cultivars for their ability to survive the winter in a wide variety of growing conditions. The 2003-04 UOWHN consisted of 13 entries including 4 check varieties. The 9 experimental lines were contributions from 2 US states . Seven of these 9 lines were new entries this year. The nursery was planted at each location as two replications of single-row, 5-foot plots. Seed for 14 tests was sent to 6 US states and 8 foreign countries. All plants survived at 1 location. The data from 11 locations were analyzed statistically. Winter survival for the lines, averaged over 11 locations, ranged from 54.1 % -79.0%. Location averages ranged from 24.1 % 97.5 %. Win/Nor1 had the highest survival (79.0 %) in the test among the experimental lines when averaged over 11 locations. Based on these tests, 11 other experimental lines had overall averages, which differed from Win/Nor1 by an amount too small to determine if the differences were due to environmental variation or genetic differences in winter hardiness.

Technical Abstract: The 2003-04 UOWHN consisted of 13 entries including 4 check varieties. The 9 experimental lines were contributions from 2 US states . Seven of these 9 lines were new entries this year. The nursery was planted at each location as two replications of single-row, 5-foot plots. Seed for 14 tests was sent to 6 US states and 8 foreign countries. All plants survived at 1 location. The data from 11 locations were analyzed statistically. Winter survival for the lines, averaged over 11 locations, ranged from 54.1 % -79.0%. Location averages ranged from 24.1 % 97.5 %. Win/Nor1 had the highest survival (79.0 %) in the test among the experimental lines when averaged over 11 locations. Based on these tests, 11 other experimental lines had overall averages, which differed from Win/Nor1 by an amount too small to determine if the differences were due to environmental variation or genetic differences in winter hardiness.