The Use of Correlated Responses in Sweetpotato Selection1

in Journal of the American Society for Horticultural Science
Alfred JonesCrops Research Division Agricultural Research Service U. S. Department of Agriculture Charleston, South Carolina

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The applicability of the method of correlated responses to selection of sweetpotatoes in a breeding program is illustrated by use of previously determined correlations between 21 traits Examples of the kinds of changes that might be expected due to correlated responses are pointed out. It is further demonstrated that knowledge of such responses can assist plant breeders in making prudent selections and in the design of improved breeding procedures. Agreement of predicted and realized correlated responses indicates that this technique is suited to use with the sweetpotato. Through mass selection procedures, cultivars with most any combination of traits desired should be possible.

Contributor Notes

Received for publication September 9, 1970.

Research Geneticist, Vegetable Breeding Laboratory.

The author is indebted to C.E. Steinbauer, Agricultural Research Service, U.S. Department of Agriculture (Retired) and D. T. Pope, North Carolina State University at Raleigh for their assistance in the cultural phases of this work; and to E. J. Koch, Biometrician, Biometrical Services, USDA, Agricultural Research Center, Beltsville, Maryland, for assistance with the statistical analysis of data.

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