In Vitro Propagation of Guzmania cv. Cherry by Axillary Shoot Culture

측지배양에 의한 Guzmania cv. Cherry의 기내 대량번식

  • Published : 1998.01.01

Abstract

Guzmania was propagated through in vitro culture of lateral shoots. When new shoots grown in greenhouse were cut and cultured in vitro, contamination rate was very high at about 80% in the first stage of in vitro culture. Among cytokinin treatments for agar medium, 2.0 mg/L BA was most effective for shoot multiplication, and those with 0.5 mg/L kinetin and 0.5~1.0 mg/L BA were favorable for shoot multiplication. BA was more effective for shoot multiplication than kinetin, and shoot multiplication was more enhanced when 2.0 mg/L BA was combined with 0.1~0.5 mg/L IAA than 2.0 mg/L BA alone. The medium with 2.0 mg/L BA and 0.1 mg/L IAA showed the highest rate of shoot multiplication with about 8.7 in shoot number, and those with 2.0 mg/L BA and 0.5~1.0 mg/L IAA also resulted in high multiplication of shoots. Shoots were multiplicated more in liquid rotation culture(80 rpm) with the medium containing 0.5 mg/L BA and 0.1 mg/L IAA than liquid stagnating and solid cultures. Regenerated shoots formed roots very favorably in the medium supplemented with 2.0 mg/L IBA.

온실에서 생육하고 있는 Guzmaniz cv. Cherry의 신초를 채취하여 기내에서 대량번식하였다. 온실에서 생장한 신초는 초대배양에서 약 80% 정도로 오염율이 매우 높았다. Cytokinin이 단용으로 첨가된 배지에서 재생된 신초의 증식은 BA 2.0mg/L 첨가배지가 신초수 6.6개로 가장 좋았으며, kinetin 0.5mg/L 첨가배지와 BA 0.5~1.0 mg/L 첨가배지도 증식이 양호하였다. 신초증식에 양호한 cytokinin 과 농도를 선택하여 IAA와 혼용첨가한 배지에서는 kinetin보다 BA를 첨가한 배지가 전반적으로 신초증식이 높았으며, BA 2.0mg/L 단용첨가보다 BA 2.0mg/L 와 IAA 0.1~0.5mg/L를 혼용첨가하였을 때, 신초의 증식이 증가하였다. BA 2.0mg/L와 IAA 0.1mg/L 를 첨가한 배지에서 8.7개의 가장 높은 신초증식율을 나타냈었고, BA 2.0mg/L 와 IAA 0.5~1.0mg/L를 첨가한 배지도 신초증식이 매우 높았다. BA 0.5 mg/L와 IAA 0.1mg/L를 첨가한 배지에서, 80rpm으로 액체회전배양하는 것이 신초수가 12.4개로 액체정체배양이나 고체배양보다 증식율이 월등히 높았다. 신초의 발근은 IBA 2.0 mg/L첨가한 배지가 발근율 100%, 뿌리수 4.14개, 뿌리길이 1.53 cm로 발근이 가장 좋았다.

Keywords

References

  1. Plant Physiol v.86 Role of ethylene and cytokinins in the initiation of lateral shoot growth in Bromeliads. Dijck RV;Proft MD;Greef JD
  2. Acta Hort v.319 In vitro growth of Ananas comosus L.(pineapple) shoot apices on different media. Hirimburegama K;Wijesinghe LPJ
  3. HotScience v.15 no.5 In vitro propagation of Bromeliads in liquid culture. Hosoki T;Asahira T
  4. Korean J Plant Tissue Culture v.22 no.4 In vitro propagation of Neoregeria carorinae cv. Tricolor from immature flowers and lateral buds. Jong HY;Park BH;Yu CJ
  5. Acta Hort v.131 In vitro propagation of Vriesea cultivars in comparison with other ornamental Bromeliaceae. Mekers O;Van Onsem JG
  6. Physiol Plant v.15 A revised medium for rapid growth and bioassays with tabacco tissues. Murashige T;Skoog F
  7. J Hort Sci v.50 Effect of adenine and kinetin on development of camation tips cultured in vitro. Pennazio S
  8. Handbook of Plant Cell Culture v.3 Pineapple Rangan TS;William RS(et. al. eds.)
  9. Sym. Sco. Exp. Biol. v.11 Chemical regulation of growth and organ formation Skoog F;Miller CO
  10. Tissue Culture of poliage plants New Flowers v.101 Komaki KT