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  • 1
    Electronic Resource
    Electronic Resource
    Classification of landraces and improved cultivars of hexaploid wheats (Triticum aestivum, T. compactum and T. spelta) grown in the USA and described in 1922 (1991)
    Springer
    Euphytica 59 (1991), S. 33-47 
    Details
    ISSN: 1573-5060
    Keywords: Triticum aestivum ; bread wheat ; Triticum compactum ; club wheat ; Triticum spelta ; spelt wheat ; classification ; genetic diversity ; landraces ; cultivars ; USA
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary In 1922 Clark, Martin and Ball published descriptions of 207 hexaploid wheat landraces and improved cultivars, collected in the USA: 189 bread wheat accessions (Triticum aestivum), 24 club wheats (T. compactum) and four spelt wheats (T. spelta). After omitting 24 bread wheat accessions with identical descriptions as other accessions, the descriptions were used here to classify the remaining 183 accessions into five clusters on the basis of 10 selected characters. Clusters 1 and 3 include mainly accessions introduced from North and West Europe. These accessions must derive from the European Zeeuwse and Gelderse landrace groups. Hence most of the accessions belonging to these two clusters belong to the North and West European heritage. Cluster 2 includes most of the accesions introduced from Australia and Canada, or belonging to the club wheats. Most accessions from the USSR1 are included in cluster 4. Here we also find Turkey and related landraces. All but one pubescent accessions are included in cluster 5. The wide variation of US wheats, described in 1922, forms the basis of the Foundation Germplasm wheats as defined by Cox (1991). Apparently no hard white winter wheat landraces and cultivars were described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00025359
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  • 2
    Electronic Resource
    Electronic Resource
    Classification of landraces and improved cultivars of rivet wheat (Triticum turgidum) and bread wheat (T. aestivum) from Great Britain and described in 1934 (1990)
    Springer
    Euphytica 47 (1990), S. 249-258 
    Details
    ISSN: 1573-5060
    Keywords: Triticum turgidum ; rivet wheat ; Triticum aestivum ; bread wheat ; classification ; landraces ; improved cultivars ; Great Britain
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Descriptions of landraces and improved cultivars of Triticum turgidum and T. aestivum grown in Great Britain, published by Percival (1934) were used to investigate between accession resemblance, and possible between accession relationships. It was found that the landrace accessions of T. turgidum belonged to one landrace and differed greatly from the bread wheat accessions. The bread wheat accessions also formed one group, but most landraces occurred at one side of the scatter diagram, and most cultivars at the other side. This distribution was mainly caused by the characters length and density of the ear. The improved cultivars had a shorter and denser ear than the landraces.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00024248
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  • 3
    Electronic Resource
    Electronic Resource
    Numerical taxonomy of Iberian pea landraces based on quantitative and qualitative characters (1995)
    Springer
    Euphytica 82 (1995), S. 195-205 
    Details
    ISSN: 1573-5060
    Keywords: pea ; Pisum sativum ; numerical taxonomy ; landraces ; qualitative traits ; combined resemblance matrix ; Iberian peninsula
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary A multivariate statistical method was applied on 19 quantitative and 11 qualitative traits in order to classify 105 pea landraces from the Northwest of the Iberian Peninsula. Ten elite cultivars were used as controls. The eleven qualitative characters were transformed by special coding. A procedure of data analyzed based on the combined resemblance matrix as a result of the joint resemblance matrix for quantitative and qualitative traits was constructed and described. The 105 pea landraces display a wide diversity at the infraspecific level for the 19 quantitative traits, however, just ten of them plus one qualitative trait could be considered as good descriptors for the pea landraces studied. The grouping patterns of the landraces did not reflect geographical origin, but provided taxonomically useful results, since it shows the possible use of six groups, vis. Group I (12 landraces), includes accessions which could be used for green and canned consumption, Group IV (18 landraces) includes edible-podded types and Group V (12 landraces) could be used for field pea (dry seed cultivars), Groups VI and VIII (each with 26 accessions) are also extremely interesting because of their heterogeneity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00029561
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