Scab resistance in apple

Apple scab (Venturia inaequalis) is a common fungal problem that requires growers to spray susceptible varieties up to 10 times per season. This spray routine imposes high costs and has a significant environmental impact. Even with a high number of sprays, control can be difficult.

Scab resistance in apples has been achieved through cross breeding resistant crab apple varieties with commercial varieties. However, the resulting varieties have not been of high quality and are not well accepted by consumers.

OSF plans to introduce the scab-resistant gene identified from crab apples into popular commercial varieties. Here again we will follow the breeding approach we used with Arctic® apples, whereby only apple genes would be used to manipulate apple varieties to create unique new varieties offering scab resistance.

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