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Resistance to Fusarium oxysporum f. sp fragariae and Predicted Breeding Values in Strawberry

Paynter, Michelle L. and De Faveri, Joanne and Herrington, Mark E. (2014) Resistance to Fusarium oxysporum f. sp fragariae and Predicted Breeding Values in Strawberry. Journal of the American Society for Horticultural Science, 139 (2). pp. 178-184. ISSN 0003-1062; 2327-9788

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Article Link(s): http://journal.ashspublications.org/content/139/2/...

Abstract

Fusarium wilt of strawberry, incited by Fusarium oxysporum f. sp. fragariae (Fof), is a major disease of the cultivated strawberry (Fragaria xananassa) worldwide. An increase in disease outbreaks of the pathogen in Western Australia and Queensland plus the search for alternative disease management strategies place emphasis on the development of resistant cultivars. In response, a partial incomplete diallel cross involving four parents was performed for use in glasshouse resistance screenings. The resulting progeny were evaluated for their susceptibility to Fof. Best-performing progeny and suitability of progenies as parents were determined using data from disease severity ratings and analyzed using a linear mixed model incorporating a pedigree to produce best linear unbiased predictions of breeding values. Variation in disease response, ranging from highly susceptible to resistant, indicates a quantitative effect. The estimate of the narrow-sense heritability was 0.49 +/- 0.04 (SE), suggesting the population should be responsive to phenotypic recurrent selection. Several progeny genotypes have predicted breeding values higher than any of the parents. Knowledge of Fof resistance derived from this study can help select best parents for future crosses for the development of new strawberry cultivars with Fof resistance.

Item Type:Article
Business groups:Horticulture and Forestry Science
Subjects:Plant culture > Fruit and fruit culture > Berries and small fruits
Science > Botany > Genetics
Plant pests and diseases
Deposited On:19 Aug 2014 02:01
Last Modified:19 Aug 2014 02:01

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