Articles
MULTIPLE RESISTANCE TO DISEASES IN A POPULATION OF LONG-DAY ADAPTED ANDIGENA POTATOES
Article number
619_21
Pages
189 – 194
Language
English
Abstract
A long-day adapted population of the Andean tetraploid primitive cultivated potato Solanum tuberosum Group Andigena was used in a recurrent mass selection program to select for combined resistances to late blight, common scab, PVY, and wart.
In each cycle the population was screened for resistance to all four diseases.
Clones were selected first on the basis of high disease resistances and then on their agronomic characteristics.
Five cycles of selection were completed over 26 years and resulted in increased frequencies of resistance to late blight, common scab, and PVY, and the maintenance of a high frequency of resistance to wart.
The frequency of combined resistance to all four diseases increased from zero to 23%. Superior disease resistant selections were crossed with typical cultivar development parents and produced progeny from which agronomically acceptable disease resistant clones were selected.
In each cycle the population was screened for resistance to all four diseases.
Clones were selected first on the basis of high disease resistances and then on their agronomic characteristics.
Five cycles of selection were completed over 26 years and resulted in increased frequencies of resistance to late blight, common scab, and PVY, and the maintenance of a high frequency of resistance to wart.
The frequency of combined resistance to all four diseases increased from zero to 23%. Superior disease resistant selections were crossed with typical cultivar development parents and produced progeny from which agronomically acceptable disease resistant clones were selected.
Authors
T.R. Tarn, A.M. Murphy, D.H. Wilson, V.J. Burns, K.G. Proudfoot
Keywords
Solanum tuberosum, mass selection, common scab, late blight, PVY, wart
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