Korean Journal of Plant Taxonomy (식물분류학회지)

The Korean Society of Plant Taxonomists (한국식물분류학회)
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Comparative seed morphology of the tribe Alsineae (Caryophyllaceae) in Korea and its taxonomic implications

한국산 Alsineae (석죽과) 종자의 형태비교 및 분류학적 유용성

  • Song, Jun-Ho (Laboratory of Plant Systematics, Department of Biology, Kyung Hee University) ;
  • Kim, Ju-Mi (Laboratory of Plant Systematics, Department of Biology, Kyung Hee University) ;
  • Ok, Min-Kyoung (Laboratory of Plant Systematics, Department of Biology, Kyung Hee University) ;
  • Hong, Suk-Pyo (Laboratory of Plant Systematics, Department of Biology, Kyung Hee University)
  • 송준호 (경희대학교 이과대학 생물학과) ;
  • 김주미 (경희대학교 이과대학 생물학과) ;
  • 옥민경 (경희대학교 이과대학 생물학과) ;
  • 홍석표 (경희대학교 이과대학 생물학과)
  • Received : 2015.10.05
  • Accepted : 2015.12.09
  • Published : 2015.12.31
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Abstract

The seed morphology of 25 taxa (8 genera) of Alsineae (Alsinoideae, Caryophyllaceae) in Korea was examined using stereo (SM) and scanning electron microscopy (SEM) in order to evaluate their diagnostic values and taxonomic implications. Circular, comma-shaped, ellipsoid, ovate, pyriform, reniform, and sub-circular seed shapes were identified. The seeds of the examined taxa range from 0.28 to 4.10 mm in length and from 0.33 to 3.10 mm in width; the smallest one was found in Sagina japonica, while the largest was in Honkenya peploides var. major. A hilar appendage was found in Cerastium, Honkenya, Moehringia, and strophioles were only observed in the genus Moehringia. Based on the examination of epidermal cells of the seed surface, four micromorphological types can be distinguished, viz., the colliculate-papillate (Col-Pap), colliculate-columellate (Col-Cll), colliculate-simple (Col-Sim), and smooth (Sm) types. Descriptions of the testa shape, margin, and the degree of elevation of the anticlinal cell walls, and the outer periclinal cell walls are summarized for the tribe. Taxonomic implications of the seed micromorphological characters were also discussed, in comparison with an earlier taxonomic system.

한국산 Alsineae (Alsinoideae, 석죽과) 8속 25분류군 종자의 형태학적 형질에 대한 식별형질로서의 가치와 분류학적 의미를 평가하기 위해 해부현미경(SM)과 주사전자현미경(SEM)을 통해 관찰하고 자세히 기재하였다. 종자의 외형은 원형, 쉼표형, 타원형, 난형, 양배형, 신장형, 아원형으로 다양하게 나타났으며, 크기는 길이 0.28-4.10 mm, 너비 0.33-3.10 mm로 개미자리(Sagina japonica)가 가장 작게 나타났고, 갯별꽃(Honkenya peploides var. major)이 가장 크게 나타났다. 점나도나물속(Cerastium), 갯별꽃속(Honkenya), 개벼룩속(Moehringia)에서 제 부위에 부속지가 관찰되었고, 개벼룩속(Moehringia)에서만 strophiole이 관찰되어 구별되었다. 종자표면무늬에 따라 4가지 유형, 구릉상-유두형, 구릉상-기둥형, 구릉상-단순형, 평활상으로 구별하였으며, 종피세포의 형태, 주변부, 수층벽 높이의 정도, 병층세포벽의 형태 등의 형질을 기재하였다. 또한, 이전에 제시된 분류체계와의 비교를 통해 종자 미세형태학적 형질의 분류학적 유용성에 대해 논의하였다.

Keywords

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