Articles
Morphological comparison of Aconitum seeds by subgenus
Article number
1439_27
Pages
199 – 204
Language
English
Abstract
Seed characteristics were evaluated by examining the morphology and anatomy of the seeds by scanning electron microscopy and light microscopy.
This study included seeds from 12 species of the genus Aconitum, collected from Korea, and were composed of two subgenus Aconitum and Lycoctonum. All the seeds studied were brown and obovoid, and the length, width and weight of the seeds were significantly different in all species.
The wings on the seed surface were classified into three types: 1) fluttering to one side, wide wings; 2) enclosing the entire seed, but narrow wings; 3) skewed to one side, but few wings.
Microsculpture features of seed surface were categorized into four types: 1) striate; 2) sulcate; 3) ribbed; and 4) coliculate; characteristically, fine granulated microsculpture was observed on the wrinkled wing surface of all seeds, except seeds of A. puchonroenicum. Anatomical observations revealed that all species had exotesta in common, and various layers were observed according to the species.
As a result of principal component analysis (PCA) and cluster analysis, the genus Aconitum was classified into three groups: group 1 included six species of subgenus Aconitum, group 2 included three species of subgenus Lycoctonum, and group 3 had members of two subgenera (Aconitum and Lycoctonum). The results of this study confirmed that seed characteristicsmorphological and anatomical structures NDASH were characteristic indicators of the species but did not strongly support the clear division in subgenera.
This study included seeds from 12 species of the genus Aconitum, collected from Korea, and were composed of two subgenus Aconitum and Lycoctonum. All the seeds studied were brown and obovoid, and the length, width and weight of the seeds were significantly different in all species.
The wings on the seed surface were classified into three types: 1) fluttering to one side, wide wings; 2) enclosing the entire seed, but narrow wings; 3) skewed to one side, but few wings.
Microsculpture features of seed surface were categorized into four types: 1) striate; 2) sulcate; 3) ribbed; and 4) coliculate; characteristically, fine granulated microsculpture was observed on the wrinkled wing surface of all seeds, except seeds of A. puchonroenicum. Anatomical observations revealed that all species had exotesta in common, and various layers were observed according to the species.
As a result of principal component analysis (PCA) and cluster analysis, the genus Aconitum was classified into three groups: group 1 included six species of subgenus Aconitum, group 2 included three species of subgenus Lycoctonum, and group 3 had members of two subgenera (Aconitum and Lycoctonum). The results of this study confirmed that seed characteristicsmorphological and anatomical structures NDASH were characteristic indicators of the species but did not strongly support the clear division in subgenera.
Authors
J. Kim, S-K. Song, K. Park, C. Hee Lee, H. Lee
Keywords
Aconitum L., seed morphology, seed anatomy
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