Effect of Triazole Compounds Treatment on Quality of Cut Flower of Dendranthema grandiflorum 'Baegkwang'

트리아졸계 화합물 처리가 절화국화의 품질에 미치는 영향

The objective of this study was to investigate the effect of triazole compounds [hexaconazole ($50mg{\cdot}L^{-1}$), diniconazole ($50mg{\cdot}L^{-1}$), myclobutanil ($150mg{\cdot}L^{-1}$), difenoconazole ($50mg{\cdot}L^{-1}$), tebuconazole ($500mg{\cdot}L^{-1}$), and bitertanol ($50mg{\cdot}L^{-1}$)] on commercial quality improvement of cut flowers of Dendranthema grandiflorum 'Baegkwang' Plant height, cut flower length and internode length decreased by all triazole compounds. Plant height, cut flower length, internode length and flower neck length were shortened by treatment of $50mg{\cdot}L^{-1}$ diniconazole and $500mg{\cdot}L^{-1}$ tebuconazole. Flower neck was thickened by hexaconazole and myclobutanil. Flower diameter increased with myclobutanil and bitertanol, while it decreased with tebuconazole. Among physiological injury, open center increased with bitertanol treatment. Overall $50mg{\cdot}L^{-1}$ diniconazole and $500mg{\cdot}L^{-1}$ tebuconazole showed a possitive effect on length flower neck and increasing chlorophyll content, while decreasing plant height, cut flower length and diameter of flowers. Thus it is necessary to consider kind, concentration, and treatment times for effective control of cut flower quality.

트리아졸계 화합물 처리시 화합물의 종류에 관계없이 초장과 절화장 및 절간길이가 단축되었으며 엽록소 함량이 증가되었다. 이러한 감소경향은 diniconazole $50mg{\cdot}L^{-1}$와 tebuconazole $500mg{\cdot}L^{-1}$처리시 컸다. 화수장은 diniconazole $50mg{\cdot}L^{-1}$와 tebuconazole $500mg{\cdot}L^{-1}$처리시 크게 단축되었던 반면, hexaconazole $50mg{\cdot}L^{-1}$와 bitertanol $50mg{\cdot}L^{-1}$ 처리시에는 증가되었다. 꽃목 굵기는 hexaconazole $50mg{\cdot}L^{-1}$와 myclobutanil $150mg{\cdot}L^{-1}$ 처리시 굵었으며 화폭의 경우 myclobutanil $150mg{\cdot}L^{-1}$와 bitertanol $50mg{\cdot}L^{-1}$처리시 증가되었고 tebuconazole $500mg{\cdot}L^{-1}$처리시에는 작아졌다. 생리장해 중 노심의 발생은 bitertanol $50mg{\cdot}L^{-1}$ 처리에 의해 증가되었다. 전체적으로 볼 때 diniconazole $50mg{\cdot}L^{-1}$와 tebuconazole $500mg{\cdot}L^{-1}$ 처리시는 화수장 단축 및 엽록소 함량 증가의 긍정적인 효과가 있었으나, 초장과 절화장이 단축되었고 화폭이 작아지는 등의 부정적 효과도 같이 나타나 처리시 주의를 요할 필요가 있다고 판단되었으며, 효과의 거양을 위해서는 화합물 종류의 선별, 농도와 처리시기 및 횟수의 조절이 필요할 것으로 생각되었다.