미나리의 體細胞 胚 생산 硏究

Production of Somatic Embryos in Oenanthe javanica (BL.) DC.

  • KOH, Gab Cheon (Naju Pear Research Institute, Rural Development Administration) ;
  • AHN, Chang Soon (Department of Horticulture, Chonnam National University)
  • 발행 : 1997.03.01

초록

본 연구는 미나리의 배발생 캘러스를 배양하여 정상적이고 균일한 형태의 체세포 배를 대량 생산할 수 있는 조건을 구명하고, 생산된 체세포배를 종묘로 이용하기 위한 기초연구로 실시하였다. 배발생 캘러스를 생장조절제, 당, 질소원등을 농도별로 첨가한 MS배지에 현탁배양한 결과는 아래와 같다. 배발생 캘러스를 생장조절제가 첨가되지 않은 액체배지에 현탁배양하면 배발생 세포괴 및 체세포 배가 왕성하게 증식되었다. 구형단계의 배를 IBA와 NAA를 첨가한 배지에 현탁배양하면 배발생 세포괴의 증식과 함께 배의 발달도 진행됐으나, 2,4-D가 첨가된 배지에서 배양하면 배발생 세포괴 및 세포만 증식하고 배의 발달은 진행되지 많았다. 질소원의 종류에 따른 배발생 세포괴의 생장 발육상태에서 $\textrm{KNO}_3$$\textrm{NH}_4\textrm{NO}_3$가 각각 20mM 첨가되었을 때 가장 좋았다. 유아 발달에는 $\textrm{NH}_4\textrm{NO}_3$가, 유근발달에는 $\textrm{KNO}_3$가 효과적이었다. 구형단계의 배를 sucrose가 3-6 % 첨가된 배지에 배양하면 발육이 좋았다. 구형단계의 배를 ABA가 첨가되지 않은 배지에 배양하면 하배축의 이상신장 및 다배현상이 일어나지만 ABA가 $10\mu\textrm{M}$ 첨가된 배지에 배양하면 하배축의 길이가 단축되고 이차배 발생도 현저히 감소하였다. 고체배지에 배발생캘러스를 계속 배양하여 다양의 구형배를 얻을 수 있고 이들을 생장조절제가 첨가되지 않은 배지에서 배양하면 종자 유내 식물체와 유사한 유식물을 얻을 수 있었다.

This study was carried out to establish a mass production of normal somatic embryos of Oenanthe iavanica (BL.) DC. including examination of nitrogen and sucrose sources, and ABA concentration. Embryogenic cell clumps and embryos were formed on the MS medium devoid of growth regulators. Proliferation of embryogenic cells and clumps was enhanced by 2, 4-D. Meanwhile embryo growth and development occurred on the media containing NAA and IBA. Growth of embryos was generally good in the media containing both 20 mM $KNO_3$ and 20 mM $NH_4NO_3$. The rate of shoot forming embryos was higher on the media containing on1y 20mM $NH_4NO_3$ than on the former. Addition of sucrose at 3-6% enhanced the embryo development, and normal embryos with short hypocotyl was observed on the medium containing $10\mu\textrm{M}$ ABA. Embryogenic cell clumps or globular embryos, when transferred to MS solid media devoid of growth regulators, developed into mature embryos and then into plantlets which had entire primary leaves like zygotic seedlings.

키워드

참고문헌

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