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Temperature, Light and Chemical Treatment Promoting Seed Germination of Meterostachys sikokiana (Makino) Nakai

난쟁이바위솔의 종자발아를 촉진하는 온도, 광 및 화학적 처리

  • Cho, Ju Sung (Brain Korea 21 Center for Bio-Resource Development, Division of Animal, Horticultural, and Food Sciences, Chungbuk National University) ;
  • Jeong, Jeong-Hak (Department of Horticultural College of Natural Sciences, Andong National University) ;
  • Kim, Soo-Young (Wildlife Genetic Resources Center, National Institute of Biological Resources Environmental Research Complex) ;
  • Lee, Cheol-Hee (Brain Korea 21 Center for Bio-Resource Development, Division of Animal, Horticultural, and Food Sciences, Chungbuk National University)
  • 조주성 (충북대학교 축산.원예.식품공학부 생물건강소재산업화사업단) ;
  • 정정학 (안동대학교 원예육종학과) ;
  • 김수영 (국립생물자원관 야생생물유전자원센터) ;
  • 이철희 (충북대학교 축산.원예.식품공학부 생물건강소재산업화사업단)
  • Received : 2014.01.28
  • Accepted : 2014.06.05
  • Published : 2014.06.30

Abstract

This study was carried out to establish seed propagation methods of Meterostachys sikokiana (Makino) Nakai, one of the specific plant species for the floral region. Observation of seed morphology characters showed wrinkled surface and elliptical shape, indicating brown, and fine seeds. Seed size ranged $1.10{\times}0.21mm$ weight of thousand seeds was $496.0{\pm}0.21mg$. Moisture contents of seeds, increased rapidly by water-soaking treatment, recording maximum moisture contents after 24 hours. Percent germination of seeds was higher under the light than dark condition. Seed germination was the best at $20^{\circ}C$ under the light condition among temperature and light conditions treated. Percent germination and germination energy was greatly improved by soaking in $GA_3$ and $KNO_3$ solutions for 24 hours. Especially, $10{\sim}100mg{\cdot}L^{-1}$ $GA_3$ treatment resulted in the highest germination rate as 99.0% and above. In case of $KNO_3$ treatment, the highest germination rate was 81.3% in 5 mM solution.

본 연구는 식물구계학적 특정식물종 II급에 해당하는 난쟁이바위솔의 종자 번식법 개발을 위해 수행되었다. 종자의 형태적 특성은 크기가 $1.10{\times}0.21mm$, 1,000립 중 이 $496.0{\pm}0.21mg$인 갈색의 미립종자였다. 종자의 함수 율은 24시간 만에 8.8%에서 39.8%로 급속히 증가하여 최대함수율을 보였다. 온도 및 광조건에 따른 발아율은 $20^{\circ}C$, 명조건에서 가장 높았으며, $GA_3$$KNO_3$용액에 24시간 처리함으로써 발아율과 발아세가 매우 향상되었다. 특히 $GA_3$ 처리구는 $10{\sim}100mg{\cdot}L^{-1}$의 농도에서 발아율이 99.0% 이상으로 매우 우수였으며, $KNO_3$는 5mM 처리구에서 발아율이 81.3%로 가장 높았다.

Keywords

Acknowledgement

Supported by : 국립생물자원관

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