The Change in Growth Phase of Luja Plants (Peristrhophe bivalvis Merrill) Due to Differences in Light Intensities and Stem Cuttings

摘要

The change in every phase of plant growth can be seen from the growth of plant organ every week. Cutting materials used can influence the growth phase in different light environmental conditions. The research aimed to find out light intensities and part of stem cuttings influencing the change in growth phase of Luja plants. Light intensities treatment consisted of 100%, 65%, 35%, and 15% and planting materials consisted of basal and tip cuttings; therefore, there were 8 treatment combinations with three repetitions. Design model used was split plot design and continued with Duncan test that analyzed using SAS 9.3 program. The research results indicated that there was an interaction between light intensities and cuttings on variables of number of leaves and leaf area. The influence of light intensities and cuttings, individually, was indicated on variables of number of leaves, number of branches, canopy diameter and leaf area. The light intensity of 35% was a good growth environment condition for Luja plant; whereas the good cutting was tip cutting thus Luja is considered as a canopy-tolerant plant.