Horticultural Science & Technology (원예과학기술지)

Korean Society of Horticultural Science (한국원예학회)
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Several Factors Affecting Mass Production of Microlepia strigosa (Thunb.) C. Presl Sporophytes

돌토끼고사리 포자체의 대량생산을 위한 몇 가지 요인

  • Cho, Ju Sung (Department of Horticultural Science, Chungbuk National University) ;
  • Lee, Cheol Hee (Department of Horticultural Science, Chungbuk National University)
  • Received : 2016.02.25
  • Accepted : 2016.09.20
  • Published : 2017.02.28
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Abstract

This study was conducted to investigate the optimal conditions for spore germination, prothallus propagation, sporophyte formation and seedling growth in Microlepia strigosa (Thunb.) C. Presl. Spore germination and prothallus development were promoted by low concentrations of Knop medium nutrient solution. The optimal medium for prothallus propagation and antheridium formation was 2X MS medium with 3% sucrose. The activated charcoal content of the medium did not affect prothallus proliferation. Among the various combinations of culture soil (bedding soil, peat moss, perlite and decomposed granite), a mixture of bedding soil, peat moss and decomposed granite at a ratio of 1 : 1 : 1 (v : v : v) had a positive effect on sporophyte formation. The most efficient conditions for promoting the growth of whole plants (sporophyte seedlings) were 50 - cell plug trays filled with a mixture of bedding soil and decomposed granite at a 2 : 1 (v : v) ratio.

본 연구는 돌토끼고사리의 포자발아, 전엽체 증식, 포자체 형성 및 육묘의 조건을 구명하여 대량증식 체계를 확립하기 위해 수행되었다. 포자 발아는 영양물질의 함량이 낮은 배지에서 촉진되었으며, 특히 Knop배지에서 최종 발아율(100%)과 전엽체의 발달이 우수하였다. MS배지를 기본으로 하여 배지구성물질을 1 / 8-2배로 조절한 배지와 Knop배지에서 전엽체를 배양한 결과, 2XMS배지에서 전엽체의 생육이 가장 왕성하였으며 다수의 장정기가 발달하였다. 또한 배지에 sucrose의 첨가량은 3%가 적절하였으며, 전엽체의 정상적인 증식을 위해 활성탄은 첨가하지 않는 것이 좋을 것으로 생각되었다. 원예용 상토, 피트모스, 펄라이트 및 마사토 등을 이용하여 포자체 형성에 적합한 배양토와 육묘용토를 개발하고자 하였다. 연구의 결과, 생육이 우수한 다수의 포자체를 형성시키기 위해서는 상토 : 피트모스 : 마사토를 1 : 1 : 1(v : v : v)로 혼합하는 것이 효과적이었다. 또한 형성된 포자체들은 50공 플러그 트레이에 상토 : 마사토를 2 : 1(v : v)로 혼합한 토양을 충진하여 육묘하였을 때 지상부의 생육이 왕성하고 뿌리의 발생량도 가장 많았다.

Keywords

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