Grafting Success of Pinus caribaea under Varying Shade Intensities at National Tree Seed Center, Namanve, Uganda
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Date
2010
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Publisher
The African Journal of Plant Science and Biotechnology
Abstract
The effect of shade intensity and grafting methods on grafting success and growth rate of Pinus caribaea was assessed in Uganda by subjecting grafts to different shade intensities. Scion growth and number of new leaves produced were counted and recorded for a period of 16 weeks. One-way ANOVA was used to statistically analyze the results. Shade intensity had a significant effect on height growth (P=0.000) and leaf production (P=0.027) but not on scion diameter growth (P=0.401). Different grafting methods showed a significant effect on scion height growth (P=0.000). Higher mean graft survival was observed with the top wedge method (49%). 95% shade intensity had the highest mean survival with a 38% graft survival. The mean scion height growth rate per week was 0.30 and 0.21 cm for top wedge and splice method, respectively. The mean scion diameter growth rate was higher with the splice method (0.032 cm) than with the top wedge method (0.017 cm). Shade intensity had a significant effect on mean height and diameter growth of scions for 0, 50 and 95% shade intensities, respectively. Although P. caribaea grafts’ survival and scion growth rate are highly influenced by both grafting method and shade intensity, a more extended study is still needed to elucidate the survival and growth rate of grafts in the field.
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Keywords
asexual propagation, grafting method, growth rate, plantation species
Citation
Mugerwa, B., & Okullo, J. B. L. (2010). Grafting success of Pinus caribaea under varying shade intensities at national tree seed center Namanve, Uganda. Afric. J. Plant Sci. Biotechnol, 4, 90-94.