Leaf morphology and numerical taxonomy of 4 genera of the tribe Galegeae in northeastern China

doi:10.11686/cyxb20150522

Abstract

Abstract: The leaf morphological structure of 25 species,representing 4 genera from the tribe Galegeae, northeastern China, was determined using GMA, SEM and leaf transparency methods. Twenty-three morphological features related to leaf and 8 non-leaf characters were selected for cluster analysis and principal component analysis. Three groups were identified; Astragalus and Gueldenstaedtia were placed in one group, and Glycyrrhiza and Oxytropis in separate groups. Features including the presence of glands, petiole shape and tannin content of petiole cells were able to distinguish Glycyrrhiza pallidiflora and G. uralensis from other Galegeae species. Stipule texture, connectivity between stipule and petiole and leaflet margin features are all useful identification characteristics of Oxytropis. Stipule shape is valuable for interspecific classification. This study provided the leaf morphological evidences for taxonomy of the Galegeae and Leguminosae systematics.

SHI Chuan-Qi, LIU Mei, WANG Chen. Leaf morphology and numerical taxonomy of 4 genera of the tribe Galegeae in northeastern China[J]. Acta Prataculturae Sinica, 2015, 24(5): 182-189.

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