Mapping QTL associated with Verticillium dahliae resistance in the cultivated strawberry (Fragaria × ananassa).
A biparental cross of octoploid strawberry segregating for resistance to Verticillium dahliae, the causative agent of Verticillium wilt, was screened under field conditions for three seasons. Average wilt scores were significantly associated with multiple QTL, which were mostly significant across all years. Markers significantly associated with the traits were used to screen material with known wilt resistance and susceptibility phenotypes. A clear and statistically significant relationship was observed between resistant, tolerant and susceptible material and the total number of markers present in the different resistance classes. In field situations resistance QTL appear to behave in an additive manner. These markers are abundant in the cultivated strawberry germplasm indicating that, despite the large number of markers, clear genetic gain is possible through marker-assisted breeding.
East Malling Research, New Road, East Malling , Kent ME19 6BJ, UK.
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Antanaviciute
Research and Innovation Centre, Fondazione Edmund Mach, Via E. Mach 1 , 38010 San Michele all'Adige (TN), Italy.
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N
Šurbanovski
East Malling Research, New Road, East Malling , Kent ME19 6BJ, UK.
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N
Harrison
East Malling Research, New Road, East Malling , Kent ME19 6BJ, UK.
K J
KJ
McLeary
East Malling Research, New Road, East Malling , Kent ME19 6BJ, UK.
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Simpson
East Malling Research, New Road, East Malling , Kent ME19 6BJ, UK.
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Wilson
Research and Innovation Centre, Fondazione Edmund Mach, Via E. Mach 1 , 38010 San Michele all'Adige (TN), Italy.
D J
DJ
Sargent
East Malling Research, New Road, East Malling , Kent ME19 6BJ, UK.
R J
RJ
Harrison