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Cuticle micromorphology of leaves of Quercus L. (Fagaceae) and its taxonomic implications  

Cho, Seong-Ho (Department of Biology & Research Institute for Dokdo & Ulleungdo Islands, Kyungpook National University)
Kim, Ki-Joong (School of Life Sciences and Biotechnology, Korea University)
Park, Chong-Wook (School of Biological Sciences, Seoul National University)
Sun, Byung-Yun (Division of Biological Sciences, Chonbuk National University)
Chung, Myong-Gi (Division of Life Science, Gyeongsang National University)
Pak, Jae-Hong (Department of Biology & Research Institute for Dokdo & Ulleungdo Islands, Kyungpook National University)
Publication Information
Korean Journal of Plant Taxonomy / v.38, no.4, 2008 , pp. 405-431 More about this Journal
Abstract
Cuticle micromorphology of 22 species of Quercus and outgroup were examined by the SEM. Twenty-two species selected each two or three species in all section of the genus Quercus. The genus Trigonobalanus and Alnus are selected as outgroups. Ten characters of the inner surface and eight characters of the outer surface of the cuticle have been described. Some characters, such as the present of papillae, arrangement of subsidiary cell, shape of anticlinal cell wall are considered important character for infrageneric classification. A parsimony analysis of 18 characters resulted in 72 most parsimonious trees with its lengths of 66 steps. The topology obtained from the analysis showed two major lineages. Subgenus Cyclobalanopsis formed one clade by 75% and subgenus Quercus formed another clade by 57% bootstrap value. Based on the cuticle morphology, the two subgenus delimitation of Camus was supported. However, sect. Erythrobalanus and sect. Cerris formed one group, and sect. Lepidobalanus formed polytomy.
Keywords
Quercus; cuticle micromorphology; adaxial surface; adaxial surface; SEM;
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