Genotype × environment interaction for resistance to the white potato cyst nematode (Globodera pallida, pathotype E) inSolanum verneixS. Tuberosumhybrids

✍ Scribed by M. S. Phillips; J. M. S. Forrest; A. M. Hayter

• Book ID: 104624811
• Publisher: Springer
• Year: 1979
• Tongue: English
• Weight: 235 KB
• Volume: 28
• Category: Article
• ISSN: 0014-2336
• DOI: 10.1007/bf00056612

✦ Synopsis

The standard root-ball test for assessing quantitative resistance of Globodera pallida in host material derived from Solanum vernei has produced variable results. This study of two sets of clones shows that genotype z environment interactions are responsible and that linear regressions (b) of phenotypic means on environments may enable good predictions to be made of the effects of the interactions. A relationship between the regression value (b) and phenotypic mean is shown for this material. The implication of this for a screening procedure in a potato breeding programme aimed at increasing potato cyst nematode resistance in adapted cultivars of S. tuberosum is discussed.