Evaluation location: Oklahoma, United States
Three runs, each lasting 90 d, were conducted in the Noble Foundation Research Greenhouse Facility at Ardmore, OK (34 10 N, 97 04 W). Planting and completion dates were 7 Apr. and 5 July 2004 for Run 1, 2 Sept. and 30 Nov. 2004 for Run 2, and 10 Feb. and 10 May, 2005 for Run 3, respectively. Experimental units consisted of a row of 5 peat pots planted to seed of a given accession; there were 2 replications per run. Supplemental light was provided for a total photoperiod of 16 h. The number of days after planting (DAP) to reach the R3 stage was determined for individual plants as the day when at least one spike had fully emerged from the flag leaf. Heads with awns less than 1 mm in length were considered awnless. Accessions with at least one spike partially or fully emerged from the flag leaf, during any of the three runs, were classified as flowering.
For an Excel table of the Hopkins data..