멀칭재료와 GA3처리에 따른 유색칼라(Zantedeschia elliottiana cv. 'Black Magic')의 생육 및 개화반응

Abstract

This experiment had been conducted to determine optimal culture conditions for the growth and cut flowers of Calla (Zantedeschia 'Black Magic' 'Golden Affair') in highlands. Tubers of calla 'Black Magic' was treated with 0, 100, and <TEX>$200mg{\cdot}L^{-1}$</TEX> concentration of <TEX>$GA_3$</TEX>. ABA content in tubers and roots were twice higher (<TEX>$20-25pmol{\cdot}mL^{-1}$</TEX>) in control than in <TEX>$GA_3$</TEX> treated tubers and roots. ABA contents in tubers was not consistent but ABA contents in roots increased with increasing <TEX>$GA_3$</TEX> concentration. However ABA is in inverse proportion to GA. It was mean that GA of high contents was ABA of low contents. Calla 'Golden Affair' was treated with different mulching materials (Control, black PE, Reflective film, Rice hull) and <TEX>$GA_3$</TEX> concentrations (0, 50, 100 and <TEX>$200mg{\cdot}L^{-1}$</TEX>). It was largest in the length of flower at mulching of reflective film, Rice hull and it was greatest in the number of cut flowers at the treated with <TEX>$200mg{\cdot}L^{-1}$</TEX> <TEX>$GA_3$</TEX>, Therefore the proper condition was at <TEX>$200mg{\cdot}L^{-1}$</TEX> <TEX>$GA_3$</TEX> with reflective film mulching.