Korean Journal of Plant Taxonomy (식물분류학회지)

The Korean Society of Plant Taxonomists (한국식물분류학회)
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Palynological and Revisional Studies of Thalictrum L. in Korea

한국산 꿩의다리속(Thalictrum L.) 식물의 화분학적 연구와 분류학적 재검토

  • Jeon, Kyoungsuk (Department of Biological Science, Sungkyunkwan University) ;
  • Heo, Kyeongin (Department of Biological Science, Sungkyunkwan University) ;
  • Lee, Sangtae (Department of Biological Science, Sungkyunkwan University)
  • 전경숙 (성균관대학교 생명과학과) ;
  • 허경인 (성균관대학교 생명과학과) ;
  • 이상태 (성균관대학교 생명과학과)
  • Received : 2007.11.22
  • Accepted : 2007.12.20
  • Published : 2007.12.31
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Abstract

The pollen and revisional study aimed for an elucidation of taxonomic delimitation and relationship of Thalictrum taxa in Korea, especially among the morphologically confused taxa. Pollen grains of 63 populations of 17 taxa were investigated by light and scanning electron microscopy. Although pollen morphology was not useful for the species classification, it revealed a tendency in which Sects. Physocarpum, Erythrandra and Tripterium having broad filaments and round-tipped anthers possess closer distance between adjacent pores, less echinus number per unit area, smaller pollen, and higher echinus, on the contrary to Sects. Omalophysa, Camptonotum and Thalictrum having filiform filaments and acute-acuminate- or more or less round-tipped anthers. The palynological result did not support several section system by Tamura (1992) but one section system by Lecoyer (1885). If a infrasectional system is needed, it was suggested that the system dividing the section into two (Clauiformes and Filiformes sensu Lecoyer) would be natural on the basis of stamen and pollen characteristics. Revisional study found out that 17 taxa(16 species) of Thalictrum are distributed in Korean including T. filimentosum which presence in Korea was not confirmed.

한국산 꿩의다리속(Thalictrum) 17분류군 63집단에 대한 화분형태 관찰과 외부형태 재검토를 통하여 분류군의 한계 설정과 분류군 간의 유연관계를 파악하였다. 화분을 광학 및 주사전자현미경으로 관찰한 결과, 화사가 곤봉-막대기 모양으로 윗부분이 약의 너비보다 넓어지고, 약이 원두 또는 요두인 Sects. Physocarpum, Erythrandra, Tripterium과는 대조적으로, 화사가 실모양으로 가늘거나 약의 너비보다 좁고, 약이 예두-첨두 또는 다소 원두인 Sects. Omalophysa, Camptonotum, Thalictrum은 공구간거리가 멀고, 세 발아구 사이에 있는 자상돌기수가 많고, 화분지름이 크고, 자상돌기 높이가 낮은 경향을 보였다. 본 연구는 한국산 꿩의다리속 분류군이 모두 Microgynes절에 포함되는 Lecoyer (1885)의 분류체계를 지지하고 있으나, 이를 6개 절로 나눈 Tamura (1992)의 분류체계는 지지하지 않고, 만약 나눈다면 Lecoyer (1885)가 지적한 수술 특정과 본 연구에서 조사한 화분형태에 따라 Claviformes와 Filiformes로 나눌 수 있음을 보여준다. 외부형태를 재검토한 결과 한반도에 분포하는 분류군은 자생여부를 파악하지 못한 큰산꿩의다리(T. filamentosum)를 포함하여 총 17분류군(16종)이었고, 이들에 대한 검색표를 작성하고 분류학적 처리를 하였다.

Keywords

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