Abstract
The influence of variety and location on flesh color was examined using Texas and Colorado grown tubers from ten yellow flesh and two white flesh potato varieties. Flesh color was determined using a Hunter Colorimeter, which gives three readings, L* (lightness to darkness), a* (green-red index) and b* (blue-yellow index) Three readings were taken from each tuber at the distal end, center, and stem end. There were significant differences in color among varieties grown in each location for L*, and at both locations, the center was darker. The distal end had the highest chroma and hue angle values at both location. Significant differences were found between the same variety grown in both locations for L*, chroma, and hue. Chroma and hue were greater in Texas grow tubers which indicated more redness. Lower mean hue angle values indicated that Texas tubers were more red, whereas Colorado tubers were yellow. Higher mean chroma values indicated that Texas grown tubers were redder than Colorado grown tubers. L*, chroma, and hue angle are the most useful quantitative measurements.
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