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|標題:||Classifier modeling and numerical taxonomy of Actinidia (Actinidiaceae) in Taiwan||作者:||Hsieh, T.Y.
|關鍵字:||Actinidia;Bayesian discriminant analysis;Flora of Taiwan;Heat map;Logistic regression classifier;Introgressive hybridization;Phylogenetic analysis;nov sect. haplopolystichum;limestone areas;phylogenetic-relationships;schismatoglottideae araceae;kiwifruit actinidia;natural hybrid;karst;cave;china;begoniaceae;guangxi||Project:||Botanical Studies||期刊/報告no：:||Botanical Studies, Volume 52, Issue 3, Page(s) 337-357.||摘要:||
Although kiwifruit (Actinidia) is popular worldwide, its complex morphology has resulted in long-standing confusion regarding its nomenclature, classification, and identification. In an attempt to resolve this issue, we conducted a phylogenetic analysis on 72 wild Actinidia accessions in Taiwan. We used 60 morphological characters as taxonomic traits to construct a seriated heat map that revealed A. callosa var. ephippioidea and A. rufa (sensu Flora of Taiwan, 2(nd) Edition) as introgressive hybrids between A. chinensis var. setosa and A. callosa (sensu Flora of Taiwan, 2(nd) Edition), as well as five significant groups of Actinida in Taiwan. Based on these results, we coded the indicator response matrix for the logistic regression models as dichotomizers and used a Bayesian discriminant model as a polychotomizer. After classifier modeling, the two classifiers were combined to identify Actinidia specimens in domestic and international herbaria. As a result, a taxonomic revision was made: A. callosa var. callosa and A. callosa var. ephippioidea were revised as A. rufa; A. rubricaulis was revised as A. callosa var. discolor; A. chinensis var. setosa was elevated to A. setosa; and A. tetramera was a misidentification of A. arguta. Of these, only A. setosa is endemic to Taiwan.
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