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  • 1
    Electronic Resource
    Electronic Resource
    The importance of wild potato species resistant to the potato cyst nematode, Globodera pallida, pathotypes P4A and P5A, in potato breeding. I. Resistance studies (1988)
    Springer
    Euphytica 37 (1988), S. 9-14 
    Details
    ISSN: 1573-5060
    Keywords: Wild potato species (Solanum spp.) ; Globodera pallida resistance ; potato cyst nematode ; intra- and interspecific hybrids ; inheritance of resistance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary 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 P4A 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 P5A was found in these species as well as S. sparsipilum. The importance of nematode resistant wild species for potato breeding is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00037216
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  • 2
    Electronic Resource
    Electronic Resource
    The importance of wild potato species resistant to the potato cyst nematode, Globodera pallida, pathotypes P4A and P5A, in potato breeding. II. The crossability of resistant species (1988)
    Springer
    Euphytica 37 (1988), S. 15-22 
    Details
    ISSN: 1573-5060
    Keywords: Solanum spp. ; wild potato species ; Globodera pallida resistance ; potato cyst nematode ; interspecific hybridisation ; germplasm utilisation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Over 2400 pollinations were made to investigate the crossability relationships between cultivated potatoes, and wild diploid species from Series Tuberosa and Circaeifolia, as well as wild polyploid species in Series Tuberosa and Longipedicellata resistant to potato cyst nematode, Globodera pallida pathotypes P4A and P5A. Wild diploids in Series Tuberosa crossed easily with cultivated diploid species, except with Solanum lignicaule where most pollinations failed, and seed set was extremely low (0.2 seeds per pollination or less). It is suggested that this species is 1EBN. S. capsicibaccatum is clearly isolated from Series Tuberosa, but can form hybrids with S. lignicaule, which can act as a bridging species to S. tuberosum haploids. S. gourlayi and S. oplocense can be crossed with both subspecies of S. tuberosum, but S. papita, Series Longipedicellata is reproductively isolated from the tetraploid cultigens. The crossability data are discussed in the light of germplasm utilisation for breeding potato varieties resistant to potato cyst nematode.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00037217
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    Paper (German National Licenses)
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