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갈조류 미역 유리배우체의 분리, 재생 및 성숙 유도

Isolation, Regeneration and the Maturation Induction of Free-Living Gametophytes of Undaria pinnatifida (Phaeophyceae)

  • 유현일 (국립수산과학원 해조류연구센터) ;
  • 김수홍 (국립수산과학원 해조류연구센터) ;
  • 이기현 (국립수산과학원 해조류연구센터) ;
  • 하동수 (국립수산과학원 해조류연구센터) ;
  • 황은경 (국립수산과학원 해조류연구센터)
  • Yoo, Hyun Il (Seaweed Research Center, National Institute of Fisheries Science) ;
  • Kim, Su Hong (Seaweed Research Center, National Institute of Fisheries Science) ;
  • Lee, Gi hyun (Seaweed Research Center, National Institute of Fisheries Science) ;
  • Ha, Dong Soo (Seaweed Research Center, National Institute of Fisheries Science) ;
  • Hwang, Eun Kyoung (Seaweed Research Center, National Institute of Fisheries Science)
  • 투고 : 2017.11.13
  • 심사 : 2017.12.07
  • 발행 : 2017.12.31

초록

본 연구에서는 다양한 온도(5, 10, 15 and $20^{\circ}C$), 조도(5, 10, 20 and $40{\mu}mol\;photons\;m^{-2}\;s^{-1}$) 및 광주기(14 : 10, 12 : 12 and 10 : 14 h L : D) 조건에서 미역 배우체의 분리, 재생 및 성숙 조건을 파악하였다. 암배우체 단편은 $15^{\circ}C$, $20{\mu}mol\;photons\;m^{-2}\;s^{-1}$, 10 : 14 h (L : D) 조건에서 빠른 생장을 보인 반면 수배우체는 $15^{\circ}C$, $5{\mu}mol\;photons\;m^{-2}\;s^{-1}$, 14 : 10 h (L:D) 조건에서 빠른 생장을 보여 차이를 나타냈다. 암수배우체의 최적 성숙 조건은 각각 $5^{\circ}C$, $20{\sim}40{\mu}mol\;photons\;m^{-2}\;s^{-1}$, 10 : 14 h (L : D) 조건과 $15^{\circ}C$, $40{\mu}mol\;photons\;m^{-2}\;s^{-1}$, 10 : 14 h (L: D) 조건이었다. 본 연구 결과 확인된 미역 유리배우체의 재생과 성숙 조건은 미역의 형질개선과 교잡 육종 등을 위한 기초자료로 활용될 수 있다.

The induction of regeneration and the maturation of the free-living gametophytes of Undaria pinnatifida were studied at temperatures(5, 10, 15 and $20^{\circ}C$), irradiance (5, 10, 20 and $40{\mu}mol\;photons\;m^{-2}\;s^{-1}$) and photoperiods (14 : 10, 12 : 12 and 10 : 14 h L: D). Female gametophyte fragments were maintained in active regeneration without them reaching sexual maturity under conditions of $15^{\circ}C$, $20{\mu}mol\;photons\;m^{-2}\;s^{-1}$, 10 : 14 h (L : D); by contrast, the conditions for male gametophytes were slightly different at $15^{\circ}C$, $5{\mu}mol\;photons\;m^{-2}\;s^{-1}$, 14 : 10 h (L: D). The sexual maturation of female and male gametophytes took place under $5^{\circ}C$, $20-40{\mu}mol\;photons\;m^{-2}\;s^{-1}$, 10 : 14 h (L : D) and $15^{\circ}C$, $40{\mu}mol\;photons\;m^{-2}\;s^{-1}$, 10 : 14 h (L : D), respectively. These results provide basic information for controlling the regeneration and maturation of free-living gametophytes for srain improvement as well as the cross breeding of U. pinnatifida.

키워드

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