Korean Journal of Plant Resources (한국자원식물학회지)

The Plant Resources Society of Korea (한국자원식물학회)
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Prothallus Morphogenesis of Cyrtomium falcatum (L.) Presl and Cyrtomium caryotideum var. coreanum Nakai In vitro Culture

기내배양에서 도깨비고비와 참쇠고비의 전엽체 형태형성

  • Jeong Jin-A (Dept. of Horticultural Science and Research Center for Bioresource and Health, Chungbuk National University) ;
  • Lee Cheol-Hee (Dept. of Horticultural Science and Research Center for Bioresource and Health, Chungbuk National University)
  • 정진아 (충북대학교 원예과학과, 생물건강산업개발연구센터) ;
  • 이철희 (충북대학교 원예과학과, 생물건강산업개발연구센터)
  • Published : 2006.04.01
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Abstract

The gametophytes of Cyrtomium falcatum and Cyrtomium caryoptideum var. coreanum arising from spores were mechanically homogenized and cultured In vitro, to study their gametophyte ontogeny and sporophyte development. Homogenized gametophytic tissues formed as one-dimensional filaments after 2 weeks in culture and then glowed into blanched gamatophytes after 4 weeks. After 6 weeks, which were developed to two dimensional plates with apical notch and meristem in central zone. After 8 weeks in culture, apomictic buds were formed on the midribs without archegonium formation and these buds developed to sporophytes after 10 weeks in culture. Flow cytometric analysis of gametophytes and apomictic sporophytes revealed that both forms had the same ploidy level in C. falcatum and C. caryoptideum vu. coreanum, respectively. This is to certify that C. caryoptideum var. coreanum was an apomictic fern as well as C. falcatum.

도깨비고비와 참쇠고비의 포자발아에서 얻은 전엽체를 균질화하여 배양함으로써 전엽체 개체발생과 포자체 형성과정을 연구하였다. 배양 2주일이 지나자 균질화한 전엽체 세포들이 일차원의 필라멘트 형태를 형성하였고, 4주일째에는 다수의 가지를 뻗은 형태의 전엽체가 출현하였다. 배양 6주일째에 apical notch가 발달된 전엽체가 형성되었는데. 중심부에는 분열조직이 발달되었다. 8주의 배양기간이 지나자 전엽체의 중심부에서 장란기의 형성 없이 무수정생식에 의한 bud가 관찰되었다. 10주일이 지나자 무수정생식에 의한 bud는 포자체로 발달되었는데, flow cytometric 분석 결과 도깨비고비와 참쇠고비 모두에서 전엽체와 포자체는 동일한 ploidy level을 지닌 것으로 확인되었다. 이는 도깨비고비뿐만 아니라 참쇠고비 또한 무수정생식을 하는 양치식물임을 증명하는 결과로 생각된다.

Keywords

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