ARS | Publication request: UNIFORM BARLEY WINTER HARDINESS NURSERY 1994-95

Submitted to: Extension Service Bulletins
Publication Type: Other
Publication Acceptance Date: August 5, 1996
Publication Date: N/A

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 1994-95 UBWHN consisted of 25 entries including 6 check varieties. The 25 experimental lines were contributions from 4 states and 2 foreign countries; 23 of these 26 lines were new entries this year. The nursery was planted at each location as 2 replications of single-row, 8-foot plots. Seed for 17 tests was sent to 13 states. Three locations had no testable differential kill, no data was received from 1 location, and the data from the remaining 13 locations was analyzed statistically. Winter survival for the entries, averaged over 13 locations, ranged from 10.9 to 97.9%. Location averages ranged from 3.3 to 98.8%. NE 93760 had the highest survival (88.8%) of all experimental lines in the test when averaged over 13 locations; four other experimental lines had overall averages which differed from NE 93760 by an amount small enough that, based on these tests, it was impossible to tell whether the differences were due to environmental variation or to genetic differences in winter hardiness.

Technical Abstract: The 1994-95 Uniform Barley Winter Hardiness Nursery consisted of 25 entries including 6 check varieties. The 25 experimental lines were contributions from 4 states and 2 foreign countries; 23 of these 25 lines were new entries this year. The nursery was planted as 2 replications of single-row, 8-foot plots in a randomized complete block design. Seed for 17 tests was sent to 13 states. Three locations had no testable differential kill, no data was received from 1 location, and the data from the remaining 13 locations was analyzed statistically. Winter survival for the entries, averaged over 13 locations, ranged from 10.9 to 97.9%. Location averages ranged from 3.3 to 98.8%. NE 93760 had the highest survival (88.8%) of all experimental lines in the test when averaged over 13 locations. Four experimental lines had overall averages that were not statistically different from NE 93760(P = 0.05, LSD = 4.4%).