식물분류학회지 (Korean Journal of Plant Taxonomy)

  • 제39권3호
  • /
  • Pages.170-180
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  • 2009
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  • 1225-8318(pISSN)
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  • 2466-1546(eISSN)
한국식물분류학회 (The Korean Society of Plant Taxonomists)
권호 표지

한국산 부추속 산부추절의 세포분류학적 연구

A cytotaxonomic study of Allium (Alliaceae) sect. Sacculiferum in Korea

  • 발행 : 2009.09.30
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초록

한국산 부추속 산부추절 8분류군에 대한 체세포염색체수와 B-염색체의 유무 및 형태를 포함한 핵형을 분석하였다. 산부추절의 기본염색체수는 x = 8로 염색체수에 따라 2배체형(2n = 2x = 16)인 산부추, 세모산부추, 둥근산부추, 세모부추, 강부추, 선부추, 한라부추와 4배체형(2n = 4x = 32)인 참산부추로 구분되었다. 각 분류군의 염색체는 중부, 차중부, 차단부염색체로 이루어져 있었고, 중부염색체는 모든 분류군들에서 대부분 일반적으로 관찰되었다. 차중부염색체는 참산부추를 제외한 모든 분류군들에서 1~2쌍으로 존재하였으며 차단부염색체는 참산부추에서만 1쌍이 존재하였다. 또한 절 내 모든 분류군들은 부수체를 가진 한 쌍의 상동염색체를 지니고 있었다. 산부추, 세모부추, 참산부추 및 강부추에서는 중부 또는 단부염색체 형태의 B-염색체가 발견되었으며, 강부추와 선부추의 핵형은 본 연구를 통해 처음으로 확인되었다. 본 연구결과 세포학적 형질은 산부추절 내 분류군을 식별하고, 유연관계를 파악하며, 분류군의 한계를 논의하는데 유용한 것으로 확인되었다. 아울러 동명(hononym)으로 인한 비합법명으로 밝혀진 둥근산부추는 A. thunbergii var. teretifistulosum H. J. Choi et B. U. Oh으로 재명명하였다.

Somatic chromosome counts and karyotype analyses were carried out for eight taxa of Korean Allium sect. Sacculiferum. The basic chromosome number of sect. Sacculiferum was x = 8, and they could be cytologically divided into two groups, that is, a diploid group (2n = 2x = 16) containing A. thunbergii var. thunbergii, A. thunbergii var. deltoides, A. thunbergii var. teretifistulosum, A. deltoidefistulosum, A. longistylum, A. linearifolium and A. taqueti, and a tetraploid group (2n = 4x = 32) with only A. sacculiferum. All observed chromosomes were classified into metacentric, submetacentric and subtelocentric. The metacentric ones appeared in all treated taxa. One or two pairs of submetacentric chromosomes were observed in most taxa except A. sacculiferum, the unique taxon with subtelocentric chromosomes. All taxa had a pair of homologous chromosomes with satellites, and the B-chromosomes found in A. thunbergii var. thunbergii, A. deltoidefistulosum, A. sacculiferum and A. longistylum, were metacentric or telocentric. The karyotypes of A. longistylum and A. linearifolium were firstly investigated in this study. In conclusion, the somatic chromosome numbers and karyotypes for members of the sect. Sacculiferum were valuable characters in identifying taxa, investigating interspecific relationships and delimiting taxa. In addition, A. thunbergii var. teretifolium, an invalid name (homonym), was renamed as A. thunbergii var. teretifistulosum H. J. Choi & B. U. Oh.

키워드

과제정보

연구 과제 주관 기관 : 한국학술진흥재단

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