A Numerical Taxonomic Study of Selected Citrus Species (Rutaceae) Based on Biochemical Characters

Abstract
Nine taxa of cultivated Citrus were studied by cluster analysis and principal coordinate analysis using 86 biochemical characters reported in the literature. Two main affinity groups were obtained. The first clusters C. medica, C. aurantifolia, and C. limon; the second includes C. reticulata, C. sinensis, C. paradisi, C. aurantium, C. jambhiri and C. grandis, the last species being, however, isolated from the main grouping. Our results show taxonomic congruence with those obtained by Barrett and Rhodes and based solely on morphological data.

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