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Abstract Detail

Systematics Section/ASPT

Chung, Kyong-Sook [1], Lee, Chunghee [2].

Morphological and cytological character evolution in Agrimoniinae (Rosaceae).

Agrimoniinae (Rosaceae) comprises less than 30 species in one widely distributed genus, mainly in the Northern Hemisphere, and four monotypic genera: Agrimonia L., Aremonia Neck. ex Nestl. (Europe), Leucosidea Eckl. & Zeyh. (Africa), Hagenia J.F.Gnek. (Africa), and Spenceria Trimen (E. Asia). Despite of low species diversity, this samall subtribe exhibits diverse morphological, geographical, ecological, and cytological characters, which provide a great opportunity of biological features in flowering plants. African genera are woody (shrubs or trees) whereas the other genera are herbaceous. The genera exhibit, interrupted pinnate compound or pinnate compound leaves with entire or dentate margins, one or two bracteoles, reduced or well-developed epicalyxes in fruits; and various levels of polyploidy(2x, 4x, 6x, and 8x). To investigate morphological and cytological character evolution, chloroplast and nuclear nucleotide markers (trnL-F, trnG-S, nrITS, and waxy) were utilized. Herbaceous plants with pinnate leaves, involucre, reduced epicalyxes, and diploidy are plesiomorphies, which are observed in the East Asian endemic genus, Spenceria. In Agrimonia, ploidy levels well support ecological and geographic characters, and fruiting hypanthia with hooked bristly epicalyxes suggest allopatric speciation in the genus.

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1 - Jungwon University, Medicinal Plant Science, 85 Munmu-ro Goesan-eup, Goesangun, Chungbuk, 367-700, Korea
2 - Korea National Arboretum, Department of Horticulture & Gardening, 415 Kwangreung Soomokwon-ro, Soheul-eup, , Pocheon, Gyeonggido, 487-829, Korea

Character evolution.

Presentation Type: Poster:Posters for Sections
Session: P
Location: Eyrie/Boise Centre
Date: Monday, July 28th, 2014
Time: 5:30 PM
Number: PSY030
Abstract ID:763
Candidate for Awards:None

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