Assessing progenies of potato for resistance to skin spot (Polyscytalum pustulans) in the glasshouse |
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Authors: | R L Wastie Helen E Stewart J E Bradshaw Alison K Lees |
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Institution: | (1) Scottish Crop Research Institute, Invergowrie, DD2 5DA Dundee, Scotland, UK |
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Abstract: | Summary Crosses were made between six parents differing in susceptibility to skin spot and glasshouse-grown tubers from true seedlings
of the nine resulting progenies assessed for resistance to the disease. The assessment was evaluated by a two-year comparison
with the behaviour of field-grown tubers of the progenies and their parents. The correlations between progenies in the glasshouse
and field were r=0.911 and 0.753 and those between the mid-parental values and the progeny means were high (r>0.864), indicating
that parental differences were heritable. It is concluded that correlations were sufficient for glasshouse-grown tubers to
be used for assessing large numbers of progenies in genetical studies and for eliminating highly susceptible progenies at
an early stage in a breeding programme.
R.L. Wastie died 16.01.96. |
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Keywords: | Solanum tuberosum L disease screening |
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