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  • Author or Editor: A. H. Melville x
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Abstract

Seedlings from a diallel set of crosses of inbred and noninbred strawberry (Fragaria X ananassa Duch.) selections resistant to Phytophthora fragariae Hickman were inoculated with the 5 principal Eastern U. S. races of the fungus. The inbred selections, when selfed or intercrossed to other inbreds or to the noninbreds, did not transmit resistance to a greater portion of their progeny than the control cross, a cross of 2 noninbreds. Specific combining ability was found to be important in transmission of resistance to progeny.

Open Access

Abstract

Most progenies from intercrossed or outcrossed inbred selections of strawberry (Fragaria × ananassa Duch.), germinated as well or better than a control outcross between 2 vigorous noninbred clones. Germination of an S3 progeny was lower than the control. In general, inbreeding reduced seedling vigor while intercrossing or outcrossing of inbreds restored vigor. Germination total and rate as expressed by an index were unrelated to subsequent seedling growth.

Open Access