Inheritance of Early Flowering in Relation to Breeding Day-neutral Strawberries1

in Journal of the American Society for Horticultural Science
Authors:
Bruce H. BarrittTree Fruit Research Center, Washington State University, Wenatchee, WA 98801

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R. S. BringhurstDepartment of Pomology, University of California, Davis, CA 95616

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V. VothDepartment of Pomology, University of California, Davis, CA 95616

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Abstract

Strawberry (Fragaria × ananassa Duch.) seedlings from 54 crosses between day-neutral and short-day parents were evaluated in western Washington for the proportion which flowered by September and for the earliness of such flowering when it occurred. The day-neutral progeny of ‘Aptos’, ‘Brighton’, ‘Hecker’, CN5, CN11, CN20, WSU 1714E and SHRI 7020/131, all day-neutral parents, flowered early. The day-neutral progeny of ‘Aiko’,’Linn’, ‘Olympus’ and ‘Tioga’, all short-day parents, flowered late. Crosses producing the highest percentage of day-neutral seedlings also had the highest percentage of day-neutral seedlings which flowered early. Reciprocal crosses produced similar results relative to the proportion of day-neutral seedlings and for the proportion of such seedlings which flowered early. For date of first flowering, general combining ability was found to be more important in these crosses than specific combining ability.

Contributor Notes

Received for publication Dec. 3, 1981. Scientific Paper No. 6082. Washington State University, Agricultural Research Center, Pullman, WA 99164. Project 0038.

The cost of publishing this paper was defrayed in part by the payment of page charges. Under postal regulations, this paper therefore must be hereby marked advertisement solely to indicate this fact.

The technical assistance of R. Schwinkendorf, Annette Summerhill, and L. C. Torre is gratefully acknowledged.

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