Plant Regeneration from Cotyledon and Hypocotyl Culture in Apple Hybrid Seedling (P.16 $\times$ Malus prunifolia)

사과 P.16 $\times$ Malus prunifolia 교잡실생의 자엽 및 배축배양에 의한 식물체 재분화

  • 김송남 (전북대학교 원예학과 (농업과학기술연구소)) ;
  • 오성도 (전북대학교 원예학과 (농업과학기술연구소)) ;
  • 김영숙 (전북대학교 유전공학연구소)
  • Published : 2000.05.01

Abstract

Adventitious shoots were induced from cotyledon and hypocotyl explants of apple hybrid seedlings (P.16$\times$ Malus prunifolia) on MS medium supplement with 2,4-D and various cytokinine (Kn. BA, TDZ) The shoot regeneration from the cotyledon culture was the highest on MS medium supplemented with 1.0 mg/L NAA and 2.0 mg/L BA. Whereas in case of hypocotyl culture, it was the highest on MS medium supplemented with 0.5 mg/L NAA and 0.5 mg/L BA. However, in the MS medium without BA there was no shoot regeneration. Hypocotyl culture seemed to be more effective than cotyledon culture in shoot regeneration. Specially, the top position of the hypocotyl found to be the best explant for shoot induction among the other segments of hypocotyls. Regenerated shoots were rooted on half-stength MS medium with 1.0 mg/L NAA. Above results suggest that Apple hybrid (P.16 $\times$ Malus prunifolia) can be multiplied via cotyledon or hypocotyl culture systems.

사과나무 교배잡종 (P.16 $\times$ M. prunifolia)의 자엽과 배축 조직을 배양하여 신초의 재분화에 미치는 2,4-D, NAA 키네틴, BA, thidiazuron의 처리효과를 조사하였다. 자엽조직은 1.0 mg/L+ NAA +2.0 mg/L BA 처리구에서, 배축조직은 0.5 mg/L NAA+0.5mg/L BA처리구에서 가장 많은 수의 신초가 분화하였으며, BA 무첨가구에서는 신초의 재분화가 전혀 이루어지지 않았다. 자엽조직보다는 배축조직을 배양하는 것이 더 효과적이었으며 특히, 배축의 상위부분을 치상하였을때 신초 재분화가 더 양호하였다. 재분화된 신초를 1/2 MS에 1.0mg/L NAA를 첨가한 발근배지에 계대배양한 결과 발근이 양호하였으며 정상적인 식물체로 생장하였다.

Keywords

References

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