Growth optimization of white turmeric (Curcuma zedoaria) plantlets with growth regulators gibberellins

Murgayanti Murgayanti; Fenny Dewi Nuroktavianti; Anne Nuraini

doi:10.24198/kultivasi.v22i1.39163

Growth optimization of white turmeric (Curcuma zedoaria) plantlets with growth regulators gibberellins

Murgayanti Murgayanti, Fenny Dewi Nuroktavianti, Anne Nuraini

Abstract

The addition of cytokinin to the multiplication of white turmeric (Curcuma zedoaria) seedlings in vitro proved effective in shoot multiplication, but the addition of high cytokinin concentrations could cause stunted shoots and stunted growth. The addition of the hormone gibberellins (GA₃) is often used in tissue culture for shoot elongation, so increasing the viability of plantlets. The experiment aims to determine the effect of GA₃ and obtain the best concentrations of GA₃consisting of 0.50, 1, and 1.5 ppm GA₃on optimizing the growth of zedoary plantlets. The experimental parameters included the number of shoots, roots, leaves, plantlet height, and chlorophyll content observed at 6 WAP after subculturing. The results showed that giving 1 ppm GA₃ had the best effect on optimizing plantlets' growth, namely the growth component of the number of shoots and plantlets' height.

Keywords

Curcuma zedoaria; Thidiazuron; Plantlets height.

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DOI: https://doi.org/10.24198/kultivasi.v22i1.39163