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Scarification and Gibberellic Acid Affecting to Dormancy Breaking of Variegated Solomon's Seal (Polygonatum odoratum var. pluriflorum 'Variegatum')

파상처리와 지베렐린을 이용한 무늬둥굴레(Polygonatum odoratum var. pluriflorum 'Variegatum')의 휴면타파

  • Rhie, Yong Ha (Department of Horticultural Science and Biotechnology, Seoul National University) ;
  • Lee, Seung Youn (Department of Horticultural Science and Biotechnology, Seoul National University) ;
  • Park, Ju Hyun (Department of Horticultural Science and Biotechnology, Seoul National University) ;
  • Kim, Ki Sun (Department of Horticultural Science and Biotechnology, Seoul National University)
  • 이용하 (서울대학교 원예생명공학전공) ;
  • 이승연 (서울대학교 원예생명공학전공) ;
  • 박주현 (서울대학교 원예생명공학전공) ;
  • 김기선 (서울대학교 원예생명공학전공)
  • Received : 2013.09.02
  • Accepted : 2014.02.05
  • Published : 2014.06.30

Abstract

The foliage of variegated Solomon's seal is excellent in cut flower arrangements. However, it has a restricted marketing period because the harvesting is limited in spring and summer. The increased interest requires the year-round production, thus techniques for dormancy breaking and forcing without low temperature treatment is needed. Therefore, experiments were conducted to d etermine whether gibberellic acid (GA) could break dormancy in variegated Solomon's seal. Thes prouting of dormant bud did not occur throughout the experiment when $GA_3$ $400mg{\cdot}L^{-1}$ was applied to dormant rhizomes as a soil drench. However, when plants were treated with a GA drench after scratch with razor blade or were given direct injection of GA, percent sprouting was increased up to 100 or 83.3%, respectively. However, because treatments with razor or syringe may damage internal organs, we tested another method, scarifying the rhizomes with sodium hypochlorite (NaOCl). Rhizome scarification with 4% NaOCl for 6 or 24 hours followed by drench of $GA_3$ $400mg{\cdot}L^{-1}$ increased the dormancy breaking percentage to 70 or 86.7%, respectively. Moreover, scarified and GA-treated rhizomes produced more leaves than untreated or GA-soil drenched plants in the glasshouse. These results showed the possibility of year-round production of variegated Solomon's seal foliage with rhizome scarification and GA treatments.

무늬 둥굴레는 화훼장식의 절엽 소재로 많이 활용되고 있으나 봄과 여름 시기에만 생산되는 제한적인 시장성을 가지고 있다. 무늬 둥굴레의 연중생산 요구가 늘어나고 있으며, 시간과 공간을 필요로 하는 저온처리를 대신하는 무늬둥굴레의 휴면타파법이 필요하다. 본 연구에서는 지베렐린을 효과적으로 처리하여 무늬둥굴레의 휴면을 타파할 수 있는 방법을 찾고자 실험을 수행하였다. 휴면 상태의 무늬둥굴레 근경에 지베렐린을 두상관주 하였을 때에는 휴면타파가 이루어 지지않았다. 하지만 지베렐린을 처리하기 전에 면도칼로 무늬둥굴레의 표피에 상처를 내어 지베렐린을 관주하거나 주사로 지베렐린을 직접 주입하였을 때에는 1년차 실험에서는 $GA_3$ $400mg{\cdot}L^{-1}$를 처리했을 때 각각 100, 83.3%의 휴면타파가 이루어졌다. 그러나 면도날이나 주사기를 사용했을 경우 무늬둥굴레에 물리적인 피해가 나타나 NaOCl을 이용한 화학적 처리를 사용해 보았다. 솜에 묻힌 4%의 NaOCl을 6시간 또는 24시간 처리한 이후에 $GA_3$ $400mg{\cdot}L^{-1}$를 처리했을 때 휴면 상태의 무늬둥굴레에서 각각 70%와 86.7%의 휴면타파 결과를 얻을 수 있었다. 그리고 대조구나 지베렐린의 관주처리에 비하여 물리적인 처리 이후 지베렐린을 처리했을 때 엽수가 더 많았다. 이와 같은 결과는 지베렐린을 효과적으로 처리하면 무늬둥굴레의 휴면을 효율적으로 타파시켜서 절엽의 주년생산에 기여할 수 있음을 알 수 있었다.

Keywords

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