Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/9650
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dc.contributor.authorPadilla, Guillermo-
dc.contributor.authorCartea González, María Elena-
dc.contributor.authorOrdás Pérez, Amando-
dc.date.accessioned2009-01-15T15:49:01Z-
dc.date.available2009-01-15T15:49:01Z-
dc.date.issued2007-
dc.identifier.citationJournal of the American Society for Horticultural Science 132: 283-436 (2007)en_US
dc.identifier.issn0003-1062-
dc.identifier.urihttp://hdl.handle.net/10261/9650-
dc.description.abstractFour clustering methods were compared for classification of a collection of 148 kale landraces (Brassica oleracea L. acephala group) from northwestern Spain based on morphologic characters: the unweighted pair group method using arithmetic averages (UPGMA) and the Ward method, hierarchical cluster algorithms, and the modified location model (MLM) applied to both the UPGMA and the Ward method (UPGMA-MLM and Ward-MLM, respectively). Comparisons were based on five criteria and on subjective considerations about the structure of each method and the characteristics of the material evaluated. Although the UPGMA-MLM was superior according to the objective criteria, its slight advantage with respect to the Ward-MLM strategy did not overcome the fact that the initial UPGMA cluster generated a classification with little value. The Ward-MLM strategy generated five homogeneous groups with defined morphologic characteristics. Moreover, the Ward-MLM strategy allowed the identification of redundant landraces, which would permit the number of accessions in further critical trials to be reduced.en_US
dc.format.extent4085 bytes-
dc.format.mimetypeimage/gif-
dc.language.isoengen_US
dc.publisherAmerican Society for Horticultural Scienceen_US
dc.rightsclosedAccessen_US
dc.subjectBrassica oleracea Group acephalaen_US
dc.subjectClustering methodsen_US
dc.subjectLandracesen_US
dc.subjectRedundant accessionsen_US
dc.titleComparison of Several Clustering Methods in Grouping Kale Landracesen_US
dc.typeartículoen_US
dc.description.peerreviewedPeer revieweden_US
dc.relation.publisherversionhttp://journal.ashspublications.org/cgi/reprint/132/3/387en_US
item.fulltextNo Fulltext-
item.openairetypeartículo-
item.languageiso639-1en-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
item.grantfulltextnone-
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