Adventitious Shoot and Plant Regeneration from Anther Culture of Hypericum ascyron L.

물레나물 약배양에 의한 부정 신초 및 식물체 재분화

  • Ko, Jeong-Ae (Faculty of Biological Resources Science, College of Agriculture, Chonbuk National University, Institute of Agricultural Science & Technology, Chonbuk National University) ;
  • Kim, Hyun-Soon (National Institute of Crop Science, Rural Development Administration) ;
  • Kim, Hyung-Moo (Faculty of Biological Resources Science, College of Agriculture, Chonbuk National University, Institute of Agricultural Science & Technology, Chonbuk National University)
  • 고정애 (전북대학교 농업생명과학대학 생물자원과학부, 농업과학기술연구소) ;
  • 김현순 (농촌진흥청 작물과학원) ;
  • 김형무 (전북대학교 농업생명과학대학 생물자원과학부, 농업과학기술연구소)
  • Published : 2008.10.31

Abstract

In order to investigate the effects of low temperature pretreatment of floral bud and plant growth regulators on anther-derived callus and shoot differentiation, anthers were cultured on 1/2 MS medium supplemented with 2,4-D, NAA, BA and TDZ. This plant depends on the plant growth regulators, for these anthers couldn't respond on 1/2 MS medium without plant growth regulators. 2,4-D was a prerequisite substance in this experiment, especially 52.6% of callus formation on MS medium with 2.0mg/L 2,4-D alone. However, the optimum medium was on 1/2 MS medium with 0.1 mg/L 2,4-D and 1.0mg/L BA for continuous growth and shoot differentiation from the anther. Calli derived from on MS medium with 2.0mg/L 2,4-D transferred to the 1/2MS medium with TDZ and BA. TDZ were less superior to BA, only one anther could produce shoot on MS media with 1.0mg/L TDZ. On the other hand, when the calli transferred to the medium with 3.0mg/L BA, adventitious shoots were proliferated, subsequently, regenerated shoots elongated from the embryogenic calli. After floral buds of one week before anthesis were incubated at $5^{\circ}C$ refrigerator for eight or fifteen days, anthers seperated from floral buds were cultured on 1/2MS medium supplemented with 0.1mg/L 2,4-D and 1.0mg/L BA. Callusing and shoot differentiation on anthers from treated at $5^{\circ}C$ for eight days were more effective than those of fifteen days or control.

물레나물 약유래 캘러스로부터 신초 재분화에 미치는 저온 전처리 및 식물생장조절물질의 효과를 조사하기 약배양을 실시하였다. 약유래 캘러스 유도 및 식물체 재분화에 미치는 식물생장조절제의 효과를 조사하기 위해 2,4-D, NAA, BA 및 TDZ를 8종류로 혼합한 1/2 MS 배지에 약배양을 실시한 결과 물레나물은 식물생장소절물질에 의존적인 식물로 배지내 식물생장조절물질이 첨가되지 않으면 캘러스가 형성되지 않았다. 2,4-D가 포함된 배지에서 약유래 캘러스 형성이 양호하였으며 2.0mg/L 9,4-D단용 처리에서 캘러스 형성율이 52.6%로 가장 높았으며 지속적 캘러스의 증식 및 shoot 분화는 0.1mg/L 2,4-D와 1.0mg/L BA 혼용처리가 효과적이었다. 2.0mg/L 2,4-D 단용처리에 의해 형성된 캘러스로부터 부정적 다수의 신초분화에 미치는 TDZ와 BA 효과를 조사한 결과 1.0mg/L TDZ 처리구에서 단 한개의 shoot가 분화된 것을 제외하고는 갤러스가 갈변되어 효과적이지 못하였으나 모든 BA 처리구에서 갤러스는 shoot가 분화되어 TDZ에 비해 효과적이었다. 특히 3.0mg/L BA 처리구에서는 캘러스 모두 shoo4로 분화되어 다수의 multishoot가 형성되어 가장 효과적이었다. 개화 1주일전의 화뢰를 $5^{\circ}C$ 에서 8일간, 15일간 저온 전처리 하여 0.1mg/L 2,4-D와 1.0 mg/L BA 혼용처리된 DIS 배지에 배양한 결과 무처리에 비해 처기구에서 약의 생육기간이 길었으며 특히 $5^{\circ}C$ 15일간 저온처리한 약이 배양기간 동안 지속적으로 캘러스 및 부정 shoot를 형성하여 저온처리 효과가 있었다.

Keywords

References

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