Journal of Plant Biotechnology

  • 제45권2호
  • /
  • Pages.110-116
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  • 2018
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  • 1229-2818(pISSN)
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  • 2384-1397(eISSN)
한국식물생명공학회 (The Korean Society of Plant Biotechnology)
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가시없는 블랙베리(Rubus fruticosus L. cv. BB21)의 근맹아를 이용한 다경유도와 절간배양을 통한 식물체 증식조건의 확립

Establishment of optimal conditions for micropropagation by node culture and multiple shoots formation from sucker explants of thornless Blackberry (Rubus fruticosus L. cv. BB21)

  • 이강섭 (농업회사법인 주식회사 바이오플러스 기업부설연구소) ;
  • 김효진 (농업회사법인 주식회사 바이오플러스 기업부설연구소) ;
  • 박대현 (농업회사법인 주식회사 바이오플러스 기업부설연구소) ;
  • 오승철 (농업회사법인 주식회사 바이오플러스 기업부설연구소) ;
  • 조한직 (농업회사법인 주식회사 바이오플러스 기업부설연구소) ;
  • 김이엽 (농업회사법인 주식회사 바이오플러스 기업부설연구소)
  • 투고 : 2018.04.26
  • 심사 : 2018.06.12
  • 발행 : 2018.06.30
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초록

본 연구에 사용한 식물체는 Rubus fruticosus L. cv. BB21은 Rubus fruticosus L. ${\times}$ R. parvifolius L. 교잡 블랙베리 V3품종에서 방사선을 처리하여 돌연변이로 선발 육종된 V9개체 중 다시 방사선을 처리하여 선발육종 된 품종이다. 이러한 우량계통의 신속한 증식을 이루기 위하여 조직 배양을 통한 효과적인 방법을 구명하고자 배지 및 생장조절물질 등의 처리에 따른 안정적인 생산을 위해 본 연구가 수행되었다. 땅속에서 채집된 근맹아 절편체를 0.1, 0.5, 1.0, 2.0 mg/L BAP가 첨가된 MS와 1/2MS 배지에 치상하여 6주간 배양한 후, 다경의 형성률을 조사하였다. 형성된 다경으로부터 산업적으로 이용하기 위한 안정된 생산을 위하여, 신초의 잎을 제거한 후 절간배양을 수행하여 다수의 소식물체를 증식하고자 여러종류의 배지 즉, AD (Anderson 1980), B5 (Gamborg 1968), MS (Murashige and Skoog 1962), SH (Schenk and Hildebrandt 1972), QL (Quoirin and Lepoivre 1977), WPM (Lloyd and McCown 1981)배지와 상기의 각각의 동일배지의 무기염류의 수준을 절반으로 한 1/2배지에 배양하였다. 초기의 생육(30일간 배양 시)에 있어서 생장은 배지 간에 차이를 나타내어 1/2AD, 1/2QL 배지에서 가장 양호한 초장을 나타내었으며, 절간수도 약 3.8, 4.4개를 나타내었으며, 뿌리, 생중량 다경유도 모두 양호하였다. 90일간 배양한 경우에서는 MS배지가 초장이 가장 양호하였으며 AD, SH 순으로 양호한 결과를 나타내었다. 식물체의 토양 순화는 신초와 뿌리가 잘 발달된 정상적인 식물체를 모래, 토양, 그리고 버뮤큘라이트가 혼합된 토양(1:1:1, v/v)에 각각 직접 이식하여 실시한 결과, 식물체의 발근율과 생존률(약98%)을 나타내었다. 이상의 결과를 통하여 블랙베리 묘목의 대량생산이 가능하여 농가에 원활한 공급이 가능할 것으로 예상된다.

This study was conducted to develop a simple, rapid, and reliable method for in vitro propagation of disease-free and true-to-type clones from sucker explants of thornless blackberry (Rubus fruticosus L. ${\times}$ R. parvifolius L.). To induce multiple shoots, the sucker explants were sterilized in 1% NaOCl solution, and then were aseptically cultured on the full and 1/2 MS solid medium supplemented with BAP (0.1, 0.5, 1.0, 2.0 mg/L). After six weeks of culture, the highest frequency (85.4%) of shoot formation from sucker explants was obtained on the full-strength MS medium with 1.0 mg/L BAP. Node explants obtained from multiple shoots were cultured on the various media of full- or half-strength of AD, B5, MS, SH, QL, WPM media, respectively. After 30 days of culture, plant growth was good on the half-AD, half-QL medium. After 90 days of culture, plant growth was good on the full MS and full SH medium. The survival rate of the plantlets after transfer to plastic pots containing soil mixture (sand: soil: vermiculite was 1:1:1, vol.) in the greenhouse was 98%. The results indicate that a multiple-shoot procedure can be applied for an efficient mass propagation of Rubus fruticosus L. ${\times}$ R. parvifolius L.

키워드

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