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ARS Home » Southeast Area » Raleigh, North Carolina » Plant Science Research » Research » Publications at this Location » Publication #136975
Title: UNIFORM BARLEY WINTER HARDINESS NURSERY 2001-2002.

Author
item Livingston, David
item Premakumar, Ramaswamy

Submitted to: Extension Service Bulletins
Publication Type: Other
Publication Acceptance Date: 7/17/2002
Publication Date: 7/30/2002
Citation: LIVINGSTON, D.P., PREMAKUMAR, R. UNIFORM BARLEY WINTER HARDINESS NURSERY 2001-2002.. EXTENSION SERVICE BULLETINS. 2002.

Interpretive Summary: The Uniform Barley Winter Hardiness Nursery (UBWHN) 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 2001-02 UBWHN consisted of 15 entries including six check varieties(one wheat variety and five barley varieties). The nine experimental lines were contributions from three states. Six of these nine lines were new entries this year. The nursery was planted at each location as two replications of single-row, 5-foot plots. Seed for 13 tests was sent to nine US states and one foreign country. All plants survived at five locations and there was no survival at one location. The data from five locations were analyzed statistically. Winter survival for the lines, averaged over five locations, ranged from 10% to 95%. Location averages ranged from 62.7% to 87%. Kearney ( check) and NE95713 had the highest survival (95 %) in the test when averaged over five locations. NE95713 had the highest survival of the barley varieties (95 %) when averaged over five locations. Based on these tests, five experimental lines had overall averages which differed from NE97891 by an amount too small to determine if the differences were due to environmental variation or genetic differences in winter hardiness.

Technical Abstract: The 2001-02 UOWHN consisted of 12 entries including four check varieties. The eight experimental lines were contributions from one US state and two foreign countries. Five of these eight 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 seven US states and seven foreign countries. All plants survived at two locations. The data from 12 locations were analyzed statistically. Winter survival for the lines, averaged over 12 locations, ranged from 48.9% to 81.4%. Location averages ranged from 2.1 % - 95.4 %. Wintok (check) had the highest survival (81.4 %) in the test averaged over 12 locations. NC97-8885 had the highest survival (74.5%) in the test among the experimental lines when averaged over 12 locations. Based on these tests, seven other experimental lines had overall averages, which differed from NC97-8885 by an amount too small to determine if the differences were due to environmental variation or genetic differences in winter hardiness.