Korean Journal of Plant Taxonomy (식물분류학회지)

The Korean Society of Plant Taxonomists (한국식물분류학회)
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Pollen morphology of Thymelaeaceae in Korea

한국산 팥꽃나무과의 화분형태학적 연구

  • Jung, Eun-Hee (Lab of Plant Systematics, Dept. of Biology & Institute of Basic Sciences, Kyung Hee University) ;
  • Hong, Suk-Pyo (Lab of Plant Systematics, Dept. of Biology & Institute of Basic Sciences, Kyung Hee University)
  • 정은희 (경희대학교 이과대학 생물학과 & 기초과학연구소, 식물분류학연구실) ;
  • 홍석표 (경희대학교 이과대학 생물학과 & 기초과학연구소, 식물분류학연구실)
  • Received : 2003.06.04
  • Accepted : 2003.08.26
  • Published : 2003.09.28
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Abstract

Pollen morphology of four genera (Daphne L. - 4 spp., Edgeworthia Meisn. - 1 sp., Wikstroemia Endl. - 2 spp., and Stellera L. 1 sp.), except 1 taxon (Diarthron Turcz. - 1 sp.) in Korean Thymelaeaceae were examined with light (LM) and scanning electron microscopy (SEM). The size of grains ($11.3-60.0{\mu}m$) are varied from small (in Stellera) through medium (in Daphne and Wikstroemia) to large (in Edgeworthia). All studied taxa have monad, spheroidal, pantoporate (10-20) grains. The exine is reticulate, especially a typical "croton pattern" which is comprising rings of more or less trihedral subunits. Each triangular subunit is topped by a single microspinule, and the surface pattern is psilale. In Daphne, three types of subunit arrangement can be recognized; - (1) Type I : subunits are arranged circles and attached to each other or sometimes fused in part, (2) Type II: each subunit is trihedral and isolated distinctly, and (3) Type III: each subunit is isolated, but somewhat vague. Systematic implication of the present pollen data for the Korean Thymelaeaceae is also briefly discussed.

한국산 팥꽃나무과(Thymelaeaceae Adans.)의 1속(아마풀속: 1종)을 제외한 4속(팥꽃나무속: 4종, 삼지닥나무속 1종, 피뿌리풀속 1종, 산닥나무속 2종)의 화분을 광학현미경(LM)과 주사전자현미경(SEM)으로 관찰하였다. 화분의 크기는 $11.3-60.0{\mu}m$로 소립(피뿌리풀속)에서 중립(팥꽃나무속, 산닥나무속), 대립(삼지닥나무속)까지 다양하게 나타났다. 조사된 분류군의 화분은 모두 단립으로 구형이고, 발아구의 형태는 산공형(10-20개)이다. 외표벽의 표면 무늬는 다소 차이는 있지만 삼면각(trihedral)의 부속요소(subunit)들이 원으로 배열하여 망상의 전형적인 "croton pattern"을 가지고 있다. 모든 부속요소의 중앙에는 하나의 미세돌기가 있고 부속요소의 표면은 평활상(psilate)이다. 팥꽃나무속 화분은 부속요소의 배열에 따라 세가지 유형으로 구별되어진다; (1) Type I: 부속요소들이 서로 붙어서 원을 이루고 부분적으로 연결이 끊어져 있는 형태, (2) Type II: 하나의 독립된 부속요소가 세 개의 면이 뚜렷한 삼면각을 이루는 형태, (3) Type III: 각 부속요소는 독립적으로 존재하나 뚜렷하지 못한 형태. 또한 한국산 팥꽃나무과에 대한 화분형질의 분류학적 적용에 대하여 간단하게 검토하였다.

Keywords

Acknowledgement

Supported by : 자생식물이용기술개발사업단

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