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Title: REPORT OF UNIFORM OAT WINTER HARDINESS NURSERY 2004-2005

Author
item Livingston, David
item Premakumar, Ramaswamy

Submitted to: Uniform Winter Oat Yield Nursery Reports
Publication Type: Government Publication
Publication Acceptance Date: 8/16/2005
Publication Date: 8/16/2005
Citation: Livingston, D.P., Premakumar, R. 2005. Report of uniform oat winter hardiness nursery 2004-2005. Uniform Winter Oat Yield Nursery Reports. p. 1-6.

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 2004-05 UOWHN consisted of 21 entries including 4 check varieties. The 17 experimental lines were contributions from 2 US states . Twelve of these 17 lines were new entries this year. The nursery was planted at each location as two replications of single-row, 5-foot plots. Seed for 12 tests was sent to 5 US states and 6 foreign countries. All plants survived at 2 locations. The data from 10 locations were analyzed statistically. Winter survival for the lines, averaged over 10 locations, ranged from 39.8 % -83.8%. Location averages ranged from 37.3 % 95.1 %. Win/Nor1 had the highest survival (83.8 %) in the test among the experimental lines when averaged over 10 locations. Based on these tests, all 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 2004-05 UOWHN consisted of 21 entries including 4 check varieties. The 17 experimental lines were contributions from 2 US states . Twelve of these 17 lines were new entries this year. The nursery was planted at each location as two replications of single-row, 5-foot plots. Seed for 12 tests was sent to 5 US states and 6 foreign countries. All plants survived at 2 locations. The data from 10 locations were analyzed statistically. Winter survival for the lines, averaged over 10 locations, ranged from 39.8 % -83.8%. Location averages ranged from 37.3 % 95.1 %. Win/Nor1 had the highest survival (83.8 %) in the test among the experimental lines when averaged over 10 locations. Based on these tests, all 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.