• Journal of Plant Biotechnology
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• 제1권2호
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• pp.97-100
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• 1999

In order to establish in vitro propagation method of sundew, Drosera rotundifolia L., the effects of MS medium concentration, cytokinin type and concentration, pH, and auxin type and concentration on shoot proliferation and root formation were investigated using shoots at 3 month after seed germination. The highest shoot production was obtained with the half strength of MS ($\frac{1}{2}$ MS) medium than with any other strength of MS medium tested. Addition of kinetin or BA in $\frac{1}{2}$ MS medium was strongly suppressed shoot proliferation. The suppression of shoot proliferation was more effective in BA-supplemented $\frac{1}{2}$ MS medium than kinetin-supplemented. The optimum pH of the media for shoot proliferation was pH 5.7-6.7. Shoots were subcultured in $\frac{1}{2}$ MS medium supplemented with 0.5mg/L 2,4-D for rooting every 8 weeks. All subcultured shoots produced extensive root systems after 5 to 6 week culture. Plantlets after root development were planted in plastic pots filled with moss. The survival rate of plantlets was almost 100%. On subculturing every 8 weeks, hundreds of the plants were propagated from a single plant within a year.

• 생명과학회지
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• 제10권2호
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• pp.169-176
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• 2000

At Koppl area, undamaged natural habitat of sundew, I have analysed interspecific affinities and community composition through mathematical method and important environmental factors. Interspecific affinities of the species with frequency of more than 5% in vegetation table were analysed through chi-square test and showed obvious group of Drosera rotundifolia, Vaccinium uliginosum, Calluna vulgaris, Eriophorum angustifolium and 21 species. The result of ordination anlysis using DECORANA of VESPAN II showed eigenvalue of 0.6047 for axis I, 0.2024 for axis II and 0.0763 for axis Ⅲ. And it divided into 4 groups of quadrat number 1-5 for Sphagnum squarrosum-community, 6-10 for Crepis paludosa-community. 11-25 for Carex panicea-community and 26-35 for Scorpidium scorpioides-community. By the classification using TWINSPAN, the 7 areas divided into 2 groups of 1-10 and 11-35 at first level of division with high eigenvalue of 0.588 and indicator was Sphagnum squarrosum. At second level of division it divided into 4 groups as the results of DECORANA with eigenvalues of 0.268 and 0.423 and indicators were Pinguicula vulgaris and Scorpidium scorpioides. Microclimatic environment of studied area was low in temperature and high in humidity and soil environment showed high in field moisture capacity, acid, high organic matter content, low NO3 and K2O content, compare to normal soil, and high ground water level.

• 한국자원식물학회지
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• 제29권5호
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• pp.564-573
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• 2016

본 연구는 자생 끈끈이주걱(Drosera rotundifolia L.)의 원예적 활용도를 높이기 위하여 종자를 이용한 대량번식법 개발을 목적으로 수행되었다. 종자는 2011년 10월에 경기도 화성시 일대에서 채집되었으며, 건조상태(4 ± 1.0℃, 암조건)로 보관하면서 연구에 사용하였다. 종자의 장축과 단축의 길이는 각 1.58 ± 0.060, 0.21 ± 0.016 ㎜로 조사되어 ‘dwarf seeds’로 분류되었으며, 1,000립 중은 6.24 ± 0.172 ㎎로 측정되었다. 끈끈이주걱 종자는 12주의 저온습윤 처리 후 20~30℃, 명조건에서 휴면타파 및 발아가 진행되어 일정기간의 겨울온도가 요구되는 생리적(physiological) 휴면성이 확인되었다. 종자의 적정 발아조건은 20℃, 명조건(54.7%)으로 구명되었으며, 명조건 상의 비교적 고온인 25, 30℃에서는 온도가 높을수록 최종발아율이 감소하는 경향을 보였다. 적정 저온습윤 처리의 기간은 발아율과 발아세가 높고 평균발아일수 및 T₅₀의 단축이 가능한 14주로 판단되었다. 또한 GA₃ 200 ㎎/L + kinetin 20 ㎎/L 혼용처리는 발아율 향상뿐만 아니라 균일한 육묘를 위해서도 효과적인 화학적 발아촉진법으로 생각되었다.