한국산 대극속(Euphorbia L., Euphorbiaceae)의 세포분류학적 연구

Cytotaxonomic study of Korean Euphorbia L. (Euphorbiaceae)

  • 정규영 (안동대학교 생명자원과학부) ;
  • 오병운 (충북대학교 생명과학부) ;
  • 박기룡 (경남대학교 생물학과) ;
  • 김주환 (대전대학교 생명과학부) ;
  • 김미숙 (안동대학교 생명자원과학부) ;
  • 남기흠 (안동대학교 생명자원과학부) ;
  • 장창기 (충북대학교 바이오연구소)
  • Chung, Gyu Young (School of Bioresource Science, Andong National University) ;
  • Oh, Byoung-Un (School of Life Science, Chungbuk National University) ;
  • Park, Ki-Ryong (Department of Biology, Kyung-Nam University) ;
  • Kim, Joo-Hwan (Division of Life Science, Daejeon University) ;
  • Kim, Mi Suk (School of Bioresource Science, Andong National University) ;
  • Nam, Gi-Heum (School of Bioresource Science, Andong National University) ;
  • Jang, Chang-Gee (Biotechnology Research Institute, Chungbuk National University)
  • 투고 : 2003.08.14
  • 심사 : 2003.08.22
  • 발행 : 2003.09.28

초록

한국산 대극속(Euphorbia L.) 13종의 체세포염색체의 분류학적 가치를 평가하기 위하여 본 연구를 수행하였다. 본 연구에 취급된 분류군들의 체세포염색체수는 2n= 12, 20, 22, 28, 40, 42, 56이었고, 기본염색체수는 x=6, 7, 10, 11이었다. 본 연구에서 체세포염색체수가 처음으로 밝혀진 분류군은 낭독(E. pallasii Turcz.; 2n=20), 단주낭독(E. hylonoma Hand.-Mazz; 2n=20.), 두메대극(E. fauriei H. L$\acute{e}$v. & Vaniot ex H. L$\acute{e}$v.;2n=28), 암대극(E. jolkini Boiss.; 2n=28)의 4종류이었으며, 기존의 보고와 일치하는 분류군은 개감수(E. sieboldiana Moor. & Decne.; 2n=20), 붉은대극(E. ebracteolata Hayata; 2n=20), 땅빈대(E. humifusa Willd. ex Schlecht.; 2n=22)의 3종류이었다. 반면 기존의 보고와 다르게 나타난 종류는 흰대극(E. esula L.; 2n= 16, 20, 60, 64 vs 2n=20), 등대풀(E. helioscopia L.; 2n=12, 42 vs 2n=42), 참대극(E. lucorum Rupr.; 2n=28, 40 vs 2n=56), 대극(E. pekinensis Rupr. in Maxim.; 2n=24 vs 2n=28, 56), 큰땅빈대(E. maculata L.; 2n=28, 42 vs 2n=12), 애기땅빈대(E. supina Raf.; n=7 vs 2n=40)이었다. 낭독, 붉은대극, 단주대극은 염색체의 수와 크기 및 부수체의 존재에 의해 다른 분류군들과 뚜렷히 구분되었으며, 큰땅빈대, 땅빈대, 애기땅빈대는 외부형태, 해부, 화분학적 형질의 공통성에도 불구하고 기본염색체수 및 체세포염색체수에서 차이를 보였다. 체세포염색체에서 얻어진 결과는 Webster(1967)의 분류체계보다 Ma and Hu(1992)의 분류체계가 타당한 것으로 판단되었다. 이와 같이 본 연구에서 얻어진 체세포염색체에 관한 형질은 절 수준에서 분류학적으로 유용하게 적용되었으며, 일부 종의 유연관계를 파악하는데 그 유용성이 인정되었다.

Somatic chromosomes about 13 taxa of Korean Euphorbia L. was investigated to estimate its taxonomic significance. Somatic chromosome numbers of treated taxa were 2n= 12, 20, 22, 28, 40, 42, 56, therefore basic chromosome numbers of those were x=6, 7, 10, 11. The chromosome numbers of E. pallasii Turcz. (2n=20), E. hylonoma Hand.-Mazz (2n=20.), E. fauriei H. L$\acute{e}$v. & Vaniot ex H. L$\acute{e}$v (2n=28) and E. jolkini Boiss. (2n=28) were determined for the first time in this study. The chromosome numbers of four taxa were same as previous ones; E. sieboldiana Moor. & Decne. (2n=20), E. ebracteolata Hayata (2n=20), E. humifusa Willd. ex Schlecht. (2n=22). But those of six taxa were different; E. esula L (2n= 16, 20, 60, 64 vs 2n=20), E. helioscopia L. (2n=12, 42 vs 2n=42), E. lucorum Rupr. (2n=28, 40 vs 2n=56), E. pekinensis Rupr. in Maxim. (2n=24 vs 2n=28, 56), E. maculata L. (2n=28, 42 vs 2n=12), E. supina Raf. (n=7 vs 2n=40). E. ebracteolata, E. pallasii and E. hylonoma were distingushcd from the other taxa by the chromosome numbers, size and satellites, E. maculata, E. humifusa, E. supina had the different basic and somatic chromosome numbers in spite of the similar morphological. anatomical and palynological chracters. The chromosomal character of Korean Euphorbia was supported the Ma and Hu's systems, and as above results, it was found to be a good character in delimiting above sections and estimating relationships for some species.

키워드

과제정보

연구 과제 주관 기관 : 한국과학재단

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