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FISH Karyotype Analysis of Seven Rose Cultivars

주요 장미 7품종의 FISH 핵형분석

  • Hwang, Yoon-Jung (Department of Horticultural Science, Kyungpook National University) ;
  • Han, Tae Ho (Division of Plant Biotechnology, College of Agriculture and Life Science, Chonnam National University) ;
  • Martin, Cathie (Department of Metabolic Biology, John Innes Centre) ;
  • Lim, Ki-Byung (Department of Horticultural Science, Kyungpook National University)
  • 황윤정 (경북대학교 원예과학과) ;
  • 한태호 (전남대학교 농업생명과학대학 식물생명과학부) ;
  • ;
  • 임기병 (경북대학교 원예과학과)
  • Received : 2012.05.30
  • Accepted : 2012.10.09
  • Published : 2012.10.31

Abstract

Determination of ploidy level for the mother plant is prerequisite for effective breeding. The study was carried out to determine the ploidy level in 7 different plant materials by FISH karyotype analysis. Among the seven plant varieties analyzed, all exhibit tetraploid (2n = 4x = 28) based on the results observed in chromosome analysis. Four signals of 45S rDNAs were detected on the terminal region of the short arm of chromosome 7. The length of somatic metaphase chromosomes ranges from 1.67 to $2.67{\mu}m$ in 'Alexandra', 1.40 to $2.04{\mu}m$ in 'Freud', 1.64 to 2.24 in 'Little Silver', 1.69 to $2.26{\mu}m$ in 'Teresa', 1.70 to $2.65{\mu}m$ in 'Tineke', 1.35 to $2.08{\mu}m$ in 'Vital', 1.39 to $2.04{\mu}m$ in 'Yellow Mimi'. Total length of the chromosome ranges from $11.23{\mu}m$ in 'Freud' as minimum to $15.05{\mu}m$ in 'Alexandra' as maximum. The karyotypes were composed of metacentric, submetacentric, and subtelocentric chromosome but there is no subtelocentric chromosome.

효율적인 교배를 위해서는 모본 또는 부본으로 사용하게 될 개체의 배수성 검정이 선행되어야 한다. 이에 본 연구에서는 국내 장미 신품종 육성 프로그램에 이용되고 있는 장미 7품종의 FISH 핵형분석을 통하여 배수성을 확인하고 이를 육종에 있어서 기초 자료로 이용하고자 수행되었다. 배수성 검경 결과, 7품종 모두 4배체(2n = 4x = 28)인 것으로 관찰되었다. FISH 핵형분석 결과, 45S rDNA는 4개의 signal이 7번 염색체 단완의 말단부위에서 관찰되었다. 염색체의 길이 관찰 결과, '알렉산드라'는 $1.67-2.67{\mu}m$, '프로이트'는 $1.40-2.04{\mu}m$, '리틀실버'는 $1.64-2.24{\mu}m$, '테레사'는 $1.69-2.26{\mu}m$, '티네케'는 $1.70-2.65{\mu}m$, '비탈'은 $1.35-2.08{\mu}m$, '옐로우미미'는 $1.39-2.04{\mu}m$로 관찰되었다. 염색체 전체 길이의 합은 프로이트 품종이 $11.23{\mu}m$ 로 가장 작았으며 알렉산드라 품종이 $15.05{\mu}m$로 가장 크게 관찰되었다. 염색체의 조성은 중부동원체형, 차중부동원체형, 차단부동원체형으로 구성되었으나 차단부염색체는 관찰되지 않았다.

Keywords

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