Micropropagation of Delphinium cv. Princess Caroline through Shoot Tip Culture

정단배양에 의한 Delphinium cv. Princess Caroline의 대량번식

  • Published : 1997.01.01

Abstract

The shoot tips of Delphinium cv. Princess Caroline were cultured on the MS medium supplemented with cytokinin and auxin alone or in combination. Among cytokinins, BA was most effective in shoot multiplication, adequqte concentrations being 1.0-5.0 mg/L. Shoot multiplication was very favorable on the media with 1.0-3.0 mg/L BA and 0.1-0.5 mg/L IAA. Additions of BA and IAA did not stimulate shoot multiplication, but increased a little fresh weight. Shoots were scarcely rooted on the media with IBA or NAA, and were not done utterly on the media containing activated charcoal. Therefore, shoots were treated by Rootone and planted in the cultural media for in vivo rooting. The highest rate of rooting was 68% in the mixed cultural medium composed of Perlite 1 and Vermiculite 1.

Delphinium cv. Princess Caroline을 대량번식하기 위하여 신초를 MS 배지에 사이토킨닌과 오옥신이 단용 또는 혼용으로 첨가된 배지에서 배양하였다. 사이토킨닌 단용처리에서 kinetin이나 2iP 첨가배지보다는 BA 첨가배지에서 신초 증식율이 높았다. 농도는 BA 1.0-5.0 mg/L가 첨가된 배지에서 신초수가 5개 이상으로 증식이 양호하였다. BA와 IAA를 혼용처리한 배지에서는 BA 1.0-3.0 mg/L와 IAA 0.1-0.5 mg/L 첨가배지에서 신초수가 5개 이상으로 높은 신초증식을 보여주었다. 그러나 BA와 IAA를 혼용첨가 하였을 때, 생체중은 약간 증가하였으나 저농도의 오옥신 첨가에 의한 신초증식 효과는 나타나지 않았다. IBA 또는 NAA가 농도별로 첨가된 배지에서 신초는 거의 발근되지 않았으며, 활성탄소가 첨가된 배지에서도 전혀 발근이 되지 않았다. 기내에서 생산된 신초의 기부에 Rootone을 뭍혀 기외발근을 한 결과, 펄라이트 1과 버미큘라이트 1의 배합토에서는 발근율이 68%, 뿌리수 약 4개, 뿌리길이 2.2cm로 발근이 양호하였다.

Keywords

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