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Assessing general combining ability for late blight resistance and tuber characteristics by means of glasshouse seedling tests

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Summary

Screening tests to detect resistance to late blight in both foliage and tubers were done on glasshouse-grown seedling progenies in parallel with visual assessments by three experienced potato breeders of the yield and quality of glasshouse-grown tubers of the same progenies.

There were large differences between the parents of the progenies in their general combining ability (GCA) for both foliage and tuber blight, despite some variation due to specific combining ability for foliage blight. There were also differences between parents in their GCAs for visual preference scores, but these GCAs and those for blight resistance were not correlated. The blight-resistant cv. Stirling had the best combination of high GCAs for all three attributes.

The use of these and other seedling progeny tests in a multitrait genotypic recurrent selection scheme is discussed.

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Authors and Affiliations

  1. Scottish Crop REsearch Institute, Invergowrie, DD2 5DA, Dundee, Scotland

    R. L. Wastie, J. E. Bradshaw & Helen E. Stewart

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  1. R. L. Wastie
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  2. J. E. Bradshaw
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  3. Helen E. Stewart
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Wastie, R.L., Bradshaw, J.E. & Stewart, H.E. Assessing general combining ability for late blight resistance and tuber characteristics by means of glasshouse seedling tests. Potato Res 36, 353–357 (1993). https://doi.org/10.1007/BF02361802

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  • DOI: https://doi.org/10.1007/BF02361802

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