Thirty short season, high fiber quality, experimental breeding lines were compared to ten commercial cultivars over a five year period to test for stability in maintaining fiber properties under adverse High Plains conditions.The experimental lines were similar in behavior to the commercial cultivars in all the measured fiber properties of length, length uniformity, strength, elongation, and micronaire. The breeding lines' stability from year to year was slightly superior in length uniformity and inferior in micronaire. Fiber strength was clearly the most stable property and also the most promising for successfully incorporating into short season cultivars. Yield performance trials were done two years on the breeding lines; the second year showing an 84% increase in lint yield over the first year.