The importance of wild potato species resistant to the potato cyst nematode,Globodera pallida, pathotypes P4A and P5A, in potato breeding. I. Resistance studies

✍ Scribed by R. Chavez; M. T. Jackson; P. E. Schmiediche; J. Franco

• Publisher: Springer
• Year: 1988
• Tongue: English
• Weight: 420 KB
• Volume: 37
• Category: Article
• ISSN: 0014-2336
• DOI: 10.1007/bf00037216

✦ Synopsis

Seven wild diploid potato species, Series Tuberosa, representing 1023 clones were screened for resistance to the potato cyst nematode, Globodera pallida . Over 25% of the clones were resistant to pathotype P 4A and almost 30% were resistant to pathotype P5A . The resistance in hybrid progenies of these and other resistant species with cultivated potatoes was evaluated, and over 2200 seedlings were screened . High frequencies of resistance (>50%) to P4A were found in progenies with Solanum leptophyes, S . vernei, S . gourlayi and S. capsicibaccatum, whereas resistance to P 5A was found in these species as well as S . sparsipilum . The importance of nematode resistant wild species for potato breeding is discussed .