This document summarizes wheat varieties tested by the Colorado State University wheat breeding program in 2007. It describes four varieties: Hatcher, CO03W239, CO03W054, and CO02W237. For each, it provides information on their agronomic performance, quality parameters like protein and hardness levels, and flour and bread baking qualities. The document indicates that Hatcher has improved quality over other common varieties and that CO03W239 and CO03W054 show potential for release as new hard white wheat varieties adapted to dryland conditions in Colorado.

1. Wheat Quality Council 2007
Scott Haley, Wheat Breeder, CSU
Presentation at - http://wheat.colostate.edu/program.html
• 2008 Colorado wheat variety survey
• 2007 WQC entry characteristics
– Background, status
– Agronomic
– Yield
– Quality
CSU Wheat Breeding

3. Medium to stronger
dough mixing properties

4. 2007 WQC Entries
• 07-2401: Hatcher (check)
– High yielding across the High Plains (CO, KS, NE Panhandle)
– Much improved dough mixing and bread baking quality
relative to TAM 107/Prairie Red and Akron/Ankor profiles
• 07-2402: CO03W239 - KS01-5539/CO99W165
– Hard white Clearfield* wheat, dryland adapted, MR stripe rust,
MS pre-harvest sprouting
– On increase with intent to release fall 2008
• 07-2403: CO03W054 - KS96HW94//Trego/CO960293
– Hard white, dryland adapted, MR stripe rust, MR pre-harvest
sprouting, WSMV resistant, 2008 breeder seed increase
• 07-2404: CO02W237 - KS98HW519/KS96HW94
– Hard white, dryland adapted, MS stripe rust, MR pre-
harvest sprouting, 2008 breeder seed increase
CSU Wheat Breeding

5. CO03W239 at Harvest
Sheridan Lake 2007

7. Wheat Quality Parameter Target CO02W237 CO03W239 CO03W054
Kernel Hardness (SKCS 4100) 60-80 62.3 * 67.5 * 70.6 *
Hatcher 64.9 64.8 65.1
Comparisons 42 42 32
Kernel Weight (mg) (SKCS 4100) >30.0 26.2 * 28.1 * 28.8
Hatcher 29.3 29.4 29.7
Comparisons 42 42 32
Kernel Diameter (mm) (SKCS 4100) >2.4 2.42 * 2.56 2.59
Hatcher 2.57 2.57 2.58
Comparisons 42 42 32
Wheat Protein (%, 12% mb) >12.0 13.7 13.1 13.0
Hatcher 13.3 13.3 13.1
Comparisons 41 43 30
Wheat Ash (%, 14% mb) <1.60 1.46 1.46 1.49
Hatcher 1.48 1.49 1.47
Comparisons 33 35 22
Quad Senior Flour Yield (%) >68 65.6 66.5 64.7 *
Hatcher 65.7 65.9 66.0
Comparisons 23 23 21
Data from CSU Wheat Quality Lab
(2003-07)
CSU Wheat Breeding

8. Flour Quality Parameter Target CO02W237 CO03W239 CO03W054
Mixograph Peak Time (minutes) 3.0-6.0 5.99 * 5.20 * 6.93 *
Hatcher 4.57 4.57 4.64
Comparisons 26 26 21
Mixograph Band Width (@ 2 min) -- 14.40 11.79 12.63
Hatcher 11.60 11.89 11.74
Comparisons 12 18 7
Pup Loaf Volume (cc) >850 1051 * 1041 * 1046 *
Hatcher 991 988 969 *
Comparisons 22 22 20
Crumb Grain (0-6) >3.0 4.09 4.18 4.25
Hatcher 3.73 3.68 3.80
Comparisons 22 22 20
Data from CSU Wheat Quality Lab
(2003-07)
CSU Wheat Breeding