Morphological plasticity of Dracaena sanderana 'Ribbon' in response to four light intensities

Effects of four shade levels on the growth of Dracaena sanderana hort Sander ex Mast. 'Ribbon' were evaluated. The experiment was conducted using model structures providing four shade levels (47%, 63%, 80%, and 91%). Dracaena sanderana exhibited morphological plasticity in growth and development. Under 63% and 80% shade, plants grew faster and achieved greater biomass than those grown in 47% and 91% shade. The lowest (47%) and the highest shade (91%) provided supraoptimal and suboptimal light levels, respectively. More leaves with less leaf area, larger internodes, and larger root mass developed in plants grown in 63% shade. Fewer leaves with larger leaf areas, smaller internodes, and smaller root mass developed in plants grown in 80% shade. Plants grown in 47% or 63% shade were less variegated than those grown in 80% or 91% shade. Maximum leaf variegation occurred under 91% shade.