Effects of IBA on Root Development at Air-layered Part of Pinus thunbergii for Miniature Tree Material

IBA가 분재소재 곰솔의 공중취목 부위의 뿌리발달에 미쳐는 영향

  • 최병철 (신구대학 도시원예학과) ;
  • 홍성각 (건국대학교 산림환경과학과) ;
  • 김종진 (건국대학교 산림환경과학과)
  • Published : 2001.12.01

Abstract

This study was carried out to investigate the effects of IBA(indole-bufrric acid) on the rooting and root growth of air-layered part of Pinus thunbergii for miniature tree material. The experiment was performed on April 13 and lune 11, 2000 in the humidity controllable greenhouse condition. In April experiment, IBA treatment with 5000ppm at girdling part shortened about 20 days for rooting than those of control and 1000ppm treatment. IBA treatment in June did not affect on the period required for rooting, but the rooting of all the air-layered seedlings was faster than that of in April. On the other hand, IBA treatment in April did not affect on the number of root grown at girdling part and the root biomass, but the treatment in June increased the number of root and the root biomass of air-layered Pinus thunbergii.