Effect of Plant Growth Regulators on Somatic Embryogenesis from Cotyledon of Herbaceous Peony (Paeonia lactiflora Pall.)

芍藥(Paeonia lactiflora Pall.)의 子葉組織 培養시 식물생장조절제가 體細胞胚發생에 미치는 影響

  • 신종희 (경북농촌진흥원 의성약초시험장) ;
  • 손재근 (경북대학교 농학과) ;
  • 김경민 (경북대학교 농학과) ;
  • 김기재 (경북농촌진흥원 의성약초시험장) ;
  • 김재철 (경북농촌진흥원 의성약초시험장)
  • Published : 1998.03.01

Abstract

This experiments were carried out to determine the optimum concentrations of plant growth regulators for the direct embryogenesis from the cotyledon culture of Paeonia lactiflora Pall. Zygotic embryos rescued from true seeds were developed abnormally in the medium containing ABA. But somatic embryogenesis from cotyledons of abnormal seedlings was induced more effectively. Also the somatic embryogenesis from cotyledons was promoted in the medium containing ABA. The frequency of embryogenesis was maximum(59.9%) from the cotyledons cultured on MS medium containing 0.5 mg/L ABA on which the frequency of somatic embryos with two cotyledons was 22.6%.

작약의 종자로부터 절취한 배를 기내 발아시켜 획득한 자엽조직으로부터 체세포배발생에 적합한 배지내의 식물생장 조절제 조성을 밝히기 위하여 전배양배지와 배유도배지의 식물생장조절제 조성별 체세포배 발생율과 접합자배의 구조와 동일한 정상 체세포배 발생 정도를 조사한 결과를 요약하면 다음과 같다. 자엽으로부터 체세포배발생을 위한 식물생장조절제로 ABA가 첨가된 배지에서 체세포배 발생율이 높았으며, 특히 ABA가 0.5 mg/L 첨가된 배지에서 59.9%의 높은 체세포배 발생율을 나타내었다. ABA가 첨가된 배지에서 접합자배를 배양할 경우 발아가 저해되고 발아한 식물체가 비정상적인 형태로 발달하는 현상이 나타났으나 이들 비정상적인 형태의 자엽으로부터 체세포배 발생이 효과적이었으며, ABA가 0.5 mg/L 첨가된 배지에서 자엽으로부터 발생된 체세포배의 형태는 2개의 자엽을 갖는 정상체세포배가 22.6%, 3개 19.5%, 1개 9.8%로 나타났으며 볼링핀 또는 나팔모양의 비정상적인 배는 1.3%로 낮게 나타났다.

Keywords

References

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