Change of Rooting Potential as Affected by Rooting Promoter Treatment in Cuttings of Corylopsis coreana

This study was conducted to determine the effects of several rooting promoter treatments on rooting of Corylopsis coreana cutttings for mass production. In first year experiment, no effect of rooting promoters was observed in hardwood cuttings taken on March 20. However, In softwood cuttings of June 20, rooting potential was greatly increased by IBA $100mg{\cdot}L^{-1}$ dipping treatment for 24 hours. Particularly, IBA $100mg{\cdot}L^{-1}$ 24 hour dipping treatment greatly shortened the days required for the rooting. In second year experiment, the result of first year was reconfirmed. Almost of all the cuttings (97.8% of rooting rate) were well rooted after only 30 days after cutting by IBA $200mg{\cdot}L^{-1}$ 24 hour dipping treatment. In this treatment, numbers and length of root were also prominent compared with any other treatment results.

히어리(Corylopsis coreana)의 삽목번식시 발근촉진제의 처리에 따른 발근력 변화

히어리 대량급속증식법의 기초를 마련하기 위해, 발근촉진제의 처리가 히어리 삽수의 발근에 미치는 영향을 살펴보았다. 삽수는 6~8년생 실생 히어리로 부터 채취하였으며, 발근촉진제로는 IBA용액, 루톤분의제 등을 이용하였다. 1차년도의 실험의 결과, 3월 20일 숙지삽목에서는 발근촉진제의 효과가 없었다. 6월 20일 녹지삽의 경우에는 IBA $100mg{\cdot}L^{-1}$ 용액 24시간 침적처리구에서 발근력이 가장 좋았다. 특히, 경시조사결과 IBA $100mg{\cdot}L^{-1}$ 24시간 침적처리구에서는 발근속도가 현저하게 빨라졌다. 2차년도의 실험의 결과에서는 IBA $200mg{\cdot}L^{-1}$ 용액 24시간 침적처리구에서는 삽목 30일만에 거의 모든 개체가 발근(97.8%)하였으며 발근수나 발근장도 타처리구에 비해 월등히 좋았다.