Effect of Cutting Media and Growth Regulators on the Cutting of Dendrobium nobile

용토와 생장조절제 처리가 노빌계 덴드로비움의 삽목번식에 미치는 영향

  • Kim, Han-Kyun (Kumhwa Plant Resource Reserach Institute) ;
  • Nam, Yu Kyeong (Kumhwa Plant Resource Reserach Institute) ;
  • Lee, Jong Suk (Dept. of Horticultural Science and Landscape Architecture, Seoul Women's University)
  • 김한균 (금화산업(주) 부설연구소) ;
  • 남유경 (금화산업(주) 부설연구소) ;
  • 이종석 (서울여자대학교 원예조경학과)
  • Received : 2009.12.23
  • Accepted : 2010.02.23
  • Published : 2010.03.31

Abstract

This study was conducted to determine the optimal rooting media composition and plant growth regulators for the mass production of new three cultivars in Dendrobium. Rooting medium experiments showed that shooting rate of 'Fizz' was the highest in perlite (Per) and vermiculite (V) mixture (1 : 1, v/v). Rooting rate of 'Prince' was 10% in the same treatment 60 days after cutting, while those of 'Candy' and 'Fizz' showed no shooting. With various kinds of auxin and different levels of concentrations, shooting rate in the other cultivars except 'Candy' increased highly at 60 days after cutting. Whereas, there were no differences between control and treatment except that of 'Fizz' with 200 ppm of IBA treatments showing 86.7%. Rates of cutting with leaves of 'Candy' and 'Fizz' were fairly high with 200 ppm of IBA compared to the control. Rate of rooting of 'Prince' was twice with 200 ppm of IBA or 50 ppm of NAA compared to the control. With various kinds of cytokinin and different concentrations, shooting rate of 'Candy' was 20% with 50 ppm of BA at 60 days after cutting; however, that of 'Fizz' increased in all treatments in 30 days after cutting and reached 100% with 200 ppm of BA compared to the control which was 77% at 60 days after cutting. Kinetin treatment had little effect on shooting rate compared to control at all concentrations. Treatment with 200 ppm of BA had clear effect on the rate of cutting with leaves of 'Fizz' and 'Prince', which was similar to shooting rate. However, the same treatment of BA had no effect on the rooting rate in all cultivars.

Acknowledgement

Supported by : 농림수산식품기술기획평가원