한국산림과학회지 (Journal of Korean Society of Forest Science)

한국산림과학회 (Korean Society of Forest Science)
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낙엽송 (Larix kaempferi) 성숙배로부터 부정아 유도를 위한 배지농도, 식물생장조절물질 및 에틸렌 억제제 효과

Effect of Culture Medium Strength, Plant Growth Regulators and Ethylene Inhibitors for Adventitious Bud Induction from Mature Zygotic Embryo in Larix kaempferi

  • 김용욱 (국립산림과학원 산림생명공학과)
  • Kim, Yong Wook (Division of Tree Biotechnology, Korea Forestry Research Institute)
  • 투고 : 2013.12.09
  • 심사 : 2014.02.25
  • 발행 : 2014.03.31
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초록

낙엽송의 성숙배로부터 최대 부정아 유도는 LP배지에 1.0 mg/L zeatin이 첨가된 처리구(76.1%)였으며, 2 mm 이상의 신초생장을 위한 효과적인 처리구는 Litvay(LM)배지에 0.5 mg/L zeatin(75.2%)을 첨가하거나, 혹은 Quoirin & Lepoivre(LP)배지에 2.0 mg/L zeatin(70.2%)에서 각각 나타났다. 배지의 염류함량을 반으로 줄인 부정아 유도 시험에서는 1/2LP배지에 1.0(83.3%) 혹은 2.0 mg/L(81.7%) zeatin을 첨가한 처리구에서 높은 유도율을 보였으나, 2 mm 이상의 신초생장을 위한 효과적인 처리구는 1/2LM배지에 1.0 mg/L zeatin(66.7%)에서였다. 배지의 염류함량을 반으로 줄인 부정아 유도 시험에서는 1/2LP배지에 1.0(83.3%) 혹은 2.0 mg/L(81.7%) zeatin을 첨가한 처리구에서 높은 유도율을 보였으나, 2 mm 이상의 신초생장을 위한 효과적인 처리구는 1/2LM배지에 1.0 mg/L zeatin(66.7%)에서였다. 그리고 1.0 mg/L zeatin처리구에서 2주배양 후 1.0 mg/L thidiazuron(TDZ) 처리구로 2주간 배양할 때 가장 높은 52.9%의 부정아 유도율을 보였으나 평균 부정아 유도수는 낮게 나타났다. 부정아유도를 위한 에틸렌활성제 혹은 억제제 첨가시험에서는 최대 부정아 유도율은 1.0 mg/L zeatin+2.0 mg/L MGBG(methylglyoxal bis-[guanylhydrazone])가 첨가된 처리구(34.6%) 였으며, 평균 최대 부정아 유도수는 1.5개를 보인 1.0 mg/L zeatin+2.0 mg/L $CoCl_2$ 처리구에서 나타났다.

Adventitious buds were produced from the cultures of mature zygotic embryos of Larix kaempferi with the highest frequency in Quoirin & Lepoivre (LP) medium containing 1.0 mg/L zeatin (76.1%). The effective treatments for inducing adventitious shoots growth above 2 mm were shown in Litvay (LM) medium with 0.5 mg/L zeatin (75.2%) or LP medium with 2.0 mg/L zeatin (70.2%), respectively. In experiment with half strength salts medium for induction of the adventitious buds, the effective treatments were obtained from 1/2LP medium with 1.0 (83.3%) or 2.0 mg/L (81.7%) zeatin, respectively. However, the best adventitious shoot growth more than 2 mm appeared in 1/2LM medium with 1.0 mg/L zeatin (66.7%). In experiment with half strength salts medium for induction of the adventitious buds, the effective treatments were obtained from 1/2LP medium with 1.0 (83.3%) or 2.0 mg/L (81.7%) zeatin, respectively. However, the best adventitious shoot growth more than 2 mm appeared in 1/2LM medium with 1.0 mg/L zeatin (66.7%). In experiment of subsequent treatment with various cytokinins for induction of the adventitious buds, the best one (52.9%) was obtained from 1.0 mg/L zeatin for 2weeks, and then subcultured to the medium with 1.0 mg/L thidiazuron (TDZ). The effect of ethylene synergist or inhibitor on adventitious buds induction was examined. The highest rate (34.6%) of adventitious buds marked from the treatments of 1.0 mg/L zeatin+2.0 mg/L MGBG (methylglyoxal bis-[guanylhydrazone]). And the highest no. of adventitious buds(1.5/explant) was shown in the medium with 1.0 mg/L zeatin+2.0 mg/L $CoCl_2$.

키워드

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