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  • Solanum tuberosum L.  (4)
  • GEOPHYSICS
  • METEOROLOGY AND CLIMATOLOGY
  • 1995-1999  (4)
  • 1
    Electronic Resource
    Electronic Resource
    Comparison of resistance toFusarium spp. of glasshouse-and field-grown tuber progenies of potato (1995)
    Springer
    Potato research 38 (1995), S. 345-351 
    Details
    ISSN: 1871-4528
    Keywords: disease screening ; progeny test ; Fusarium coeruleum ; Fusarium sulphureum ; Gibberella pulicaris ; Solanum tuberosum L.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Field-grown tubers of 22 progenies ofSolanum tuberosum L. generated in a crossing programme involving seven parents differing in resistance toFusarium coeruleum Lib. ex Sacc. andF. sulphureum Schlect. (=F. sambucinum Fuckel, teleomorphGibberella pulicaris (Fr.) Sacc.) were wound-inoculated with a cornmeal + sand culture of each pathogen. Parental genotypes were also included. The mean lesion size of each progeny was compared in 2 years of tests, as well as with published data on glasshouse-grown tubers. ForF. coeruleum there was a high correlation between years as well as with the glasshouse data, but no such correlations were apparent withG. pulicaris. Furthermore, parental and GCA values, as well as progeny means and mid-parent scores, also correlated highly forF. coeruleum but not forG. pulicaris. Glasshouse-grown tubers of 11 wildSolanum spp. were also inoculated with both pathogens. Some resistance to one or other, or both, was apparent, particularly inS. chacoense.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02357739
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  • 2
    Electronic Resource
    Electronic Resource
    Susceptibility toPhytophthora infestans of field-and glass-house-grown potato tubers (1996)
    Springer
    Potato research 39 (1996), S. 283-288 
    Details
    ISSN: 1871-4528
    Keywords: Solanum tuberosum L. ; disease screening ; late blight
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Tests for resistance toPhytophthora infestans were done twice in each of 2 years on field- and glasshouse-grown tubers of ten cultivars. The cultivar rankings, were almost identical for the means of the four glasshouse tests and the means of the four field tests. However, for the field tests but not for the glasshouse tests there were cultivar x harvest date and cultivar x year interactions. It is concluded that resistance can be assessed on glasshouse-grown tubers and that such assessments should prove more consistent over years than those done on field-grown tubers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02360920
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  • 3
    Electronic Resource
    Electronic Resource
    Assessing progenies of potato for resistance to skin spot (Polyscytalum pustulans) in the glasshouse (1997)
    Springer
    Potato research 40 (1997), S. 383-389 
    Details
    ISSN: 1871-4528
    Keywords: Solanum tuberosum L. ; disease screening
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02357997
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  • 4
    Electronic Resource
    Electronic Resource
    Assessing general combining ability for gangrene resistance by means of a glasshouse seedling test (1996)
    Springer
    Potato research 39 (1996), S. 179-183 
    Details
    ISSN: 1871-4528
    Keywords: Phoma foveata ; potato breeding ; potato ; Solanum tuberosum L. ; Solanum tuberosum subsp ; andigena
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary A seedling progeny test for resistance to gangrene (Phoma foveata) was used to evaluate progenies from a 15×15 half diallel set of crosses, including 14 selfs and 25 reciprocal crosses, which was originally made to investigate the inheritance of resistance to late blight and cyst nematodes. Nine out of the 14 selfs were more susceptible than the crosses involving their parents, so that overall the selfs were slightly more susceptible than the crosses, thus providing evidence of non-additive gene action in favour of resistance. However, when the selfs were omitted from the analysis, all of the variation between progenies could be attributed to differences in the General Combining Abilities (GCAs) of their parents. The four parents with the best GCAs for gangrene resistance all had sizeable contributions fromSolanum tuberosum subsp.andigena in their pedigrees.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02358217
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