Articles
RESISTANCE TO POWDERY SCAB (SPONGOSPORA SUBTERRANEA) IN POTATOES – A KEY COMPONENT OF INTEGRATED DISEASE MANAGEMENT
Article number
670_5
Pages
57 – 62
Language
English
Abstract
Powdery scab has been present in New Zealand for many years, but in the early 1990s the disease was identified as a major problem affecting this countrys potato industry.
Initial efforts to control the disease centred on using genetic resistance and chemical applications to seed tubers and soils.
Since 1991 annual screening trials have been conducted to test new commercial cultivars and advanced breeding lines from the Crop & Food Research potato breeding programme for resistance to powdery scab.
Results from these trials have provided growers with information on cultivar resistance, allowing them to plan appropriate control measures.
Potato breeders are using the results of the tests to plan crosses that will maximise the chances of producing resistant progenies.
The incorporation of disease resistance into potato cultivars will provide sustainable control of this important disease.
Initial efforts to control the disease centred on using genetic resistance and chemical applications to seed tubers and soils.
Since 1991 annual screening trials have been conducted to test new commercial cultivars and advanced breeding lines from the Crop & Food Research potato breeding programme for resistance to powdery scab.
Results from these trials have provided growers with information on cultivar resistance, allowing them to plan appropriate control measures.
Potato breeders are using the results of the tests to plan crosses that will maximise the chances of producing resistant progenies.
The incorporation of disease resistance into potato cultivars will provide sustainable control of this important disease.
Authors
R.A. Genet, R.E. Falloon, W.F. Braam, A.R. Wallace, J.M.E. Jacobs, S.J. Baldwin
Keywords
potato breeding, screening for resistance
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