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Using the Solvent Retention Capacity Test When Breeding Wheat for Diverse Production Environments

^a Dep. of Crop and Soil Sciences, Washington State Univ., 219 Johnson Hall, Pullman, WA, 99164-6420
^b USDA-ARS, Wheat Genetics, Wheat Genetics, Quality, Physiology, and Disease Research Unit, 209 Johnson Hall, Pullman, WA 99164-6420
^c Decagon Devices, 950 NE Nelson Ct., Pullman, WA 99163

View larger version (32K): [in this window] [in a new window]   Figure 1. Predicted repeatabilities of solvent retention capacities (SRCs) using four solvents: (A) 5% (w/w) lactic acid; (B) 50% (w/w) sucrose; (C) 5% (w/w) Na2CO3; and (D) water. Two scales of the SRC test were conducted on eight spring and 16 winter soft white wheat genotypes grown in five and three environments, respectively, in eastern Washington in 2005. Grain samples were collected from two field replications per genotype in each environment, and duplicate SRC tests were conducted on each grain sample. Predicted repeatabilities were calculated using data from the spring sample set according to Eq. [1], using variance components in Table 4. L, number of lab replications entered into Eq. [1]; F, number of field replications entered into Eq. [1]; Env, number of environments entered into Eq. [1].