Korean Journal of Plant Taxonomy (식물분류학회지)

The Korean Society of Plant Taxonomists (한국식물분류학회)
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C-banded karyotypes of Allium (Alliaceae) sect. Sacculiferum in Korea

C-banding pattern에 의한 한국산 부추속 산부추절의 핵형 연구

  • Published : 2009.09.30
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Abstract

C-banded karyotypes of eight taxa of Korean Allium sect. Sacculiferum were examined by means of Giemsa techniques. Each of the taxa had their own characteristic bands. Most of the bands on the somatic metaphase chromosomes were mainly located on the short arm, intercalary region and medium sized chromosomes. In addition, the heterochromatic bands were usually facultative, recognized as two spots, and all investigated taxa had a pair of satellites of heterochromatin. The similarities of total length and number of bands revealed that three varieties of A. thunbergii G. Don have a closer cytological relationship than the others. The C-banding patterns of A. longistylum and A. linearifolium were examined for the first time in this study, and the former was clearly distinguished from the others by the distribution and number of its bands. The proportion of heterochromatic bands suggested that A. thunbergii var. thunbergii is the most primitive, and A. sacculiferum the most advonced, within the section.

한국산 부추속(Allium) 산부추절(sect. Sacculiferum)의 8분류군에 대해 Giemsa 분염법을 이용한 C-banding pattern을 분석하였다. 절 내 분류군들은 각각 특징적인 C-banding pattern를 보였으나, 전반적으로 염색체 단완과 동원체 중간부 그리고 중염색체에 비교적 많은 밴드가 분포하였고, 대부분이 2개의 점으로 인식되는 점상밴드로 이루어져 있었으며, 이질염색질로 구성된 한 쌍의 부수체가 존재하는 공통적인 특징을 보였다. 산부추, 둥근산부추, 세모산부추는 밴드의 길이와 수, 이질염색질의 양에서 높은 유사성이 나타나면서 비교적 가까운 세포학적 유연관계에 있음이 증명되었다. 강부추, 선부추, 한라부추의 C-banding pattern들은 본 연구를 통해 처음으로 확인되었고, 이 중 강부추는 밴드의 수와 분포양상에서 뚜렷한 차이를 보여 다른 분류군들과 구별되었다. 절 내 분류군 중 참산부추는 세포 내 이질염색질의 비율에 의해 가장 진화된 분류군으로, 산부추는 가장 원시적인 분류군으로 추정되었다.

Keywords

Acknowledgement

Supported by : 한국학술진흥재단

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