Micropropagation of Superior Variety of Japanese Pepper Tree (Zanthoxylum piperitum Dc.)

수형목 민초피나무의 기내 대량 증식

  • Sung Ho SON (Division of Biotechnology, Forest Genetics Research Institute, Forestry Administration) ;
  • Seong Doo HUR (Division of Nut Tree, Forest Genetics Research Institute, Forestry Administration) ;
  • Jung Hee KIM (School of Forestry, Michigan Technological University) ;
  • Yun Hee LEE (Division of Biotechnology, Forest Genetics Research Institute, Forestry Administration) ;
  • Mee Hee KIM (Division of Biotechnology, Forest Genetics Research Institute, Forestry Administration) ;
  • Jin Seon PARK (Division of Biotechnology, Forest Genetics Research Institute, Forestry Administration) ;
  • Young Wook LEE (Division of Biotechnology, Forest Genetics Research Institute, Forestry Administration) ;
  • Heung Kyu MOON (Division of Biotechnology, Forest Genetics Research Institute, Forestry Administration) ;
  • Yang YOUN (Division of Biotechnology, Forest Genetics Research Institute, Forestry Administration)
  • Published : 1995.05.01

Abstract

Japanese pepper (Zanthoxylum piperitum Dc.) tree of selected genotype was propagated by a two-step method. Among the media tested, BTM promoted shoot height growth and DKW revealed as superior to micro-canopy increment Multiple shoot formation was greatest when the single shoot were subcultured on medium containing 0.89 $\mu$M BA alone. The numbers of survival shoots could be markedly increased by acclimatization of the multiplied shoots itself in plastic Petridish (punctured with pin on the top) for two weeks and subsequently transplanting each shoot onto peat plug system. After transplanting the micropropagules onto pots, prickliness characteristics seem to be transmitted to all plane produced from selected genotype.

생산성이 높고 가시가 없는 초피나무의 2단계 대량증식이 가능하였다. 기내 줄기의 생장에는 대체로 DKW 배지가 좋은 반등을 보였으며, 수평으로 120$^{\circ}$각도를 준 플라스틱 Petri dish에서 다경 줄기를 유도할 때에는 BAP 0.89 $\mu$M이 적당한 것으로 나타났다. 다경 줄기를 유도한 후, 수직으로 세운 Petri dish의 윗면에 5-7개의 구멍을 낸 다음, 30% 정도의 빛만 투과할 수 있는 조건의 온실에서 환경순화를 시켰다. 이들 다경 줄기의 기저부를 제거한 다음 각각의 줄기를 피트 플러그에 이식한 결과, 100%의 발근율을 얻었다. 폿트에서 약 6개월 가량 유지하였을 때에도 선발목에서와 같이 줄기에 가시가 형성되지 않았으며, 향후 생산성에 대한 검정이 이루어지면, 조직배양에 의한 실용화가 가능할 것으로 생각된다.

Keywords