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Provenance trial of Gmelina aborea (Roxb.) in middle-Belt Zone of Nigeria

Author Affiliations

  • 1Department of Forestry and Wildlife Management, Nasarawa State University Keffi, Shabu-Lafia, Nigeria
  • 2Department of Forest Production and Products, University of Ibadan, Nigeria

Res. J. Agriculture & Forestry Sci., Volume 7, Issue (3), Pages 27-31, July,8 (2019)


A field experiment was conducted to examine the provenance germination and growth trial of Gmelina arborea (Roxb.) within three states (Makurdi, Nasarawa and Abuja) in middle-belt zone of Nigeria. The experiment was carried out in the nursery site of the Department of Forestry and Wildlife Management, Nasrawa State University Lafia. 500 seeds of Gmelina were collected from each location, it was sun-dried for 6 hours and then soaked in water for 24 hours to break its dormancy and improve its germination rate. It was then planted on germination beds in the nursery and transplanted after two weeks of germination into nursery pots and data was recorded on Plant height, Number of leaves and collar girth. The study was laid in a Randomized Completely Block Design (RCBD), Analysis of variance was performed on the data to show the comparative performance of each treatment with another. Duncan's Multiple Range Test (DMRT) was applied to locate where the significant difference occur among the seeds. The result of germination with respect to location revealed that G. arborea seed collected from Nasarawa recorded the highest germination of plant height (34.75±9.24) followed by seeds from Makurdi (33.66±6.54) while the least (33.22±5.71) was recorded on seeds collected from Abuja. Makurdi seeds recorded highest number of leaves (19.56±3.59), followed by Nasarawa (18.68±3.39) and the least (16.53±2.98) in Abuja. The result of collar girth reveals that seeds collected in Lafia had the highest mean value (2.39±1.83) followed by Abuja seeds (2.37±0.42) and the least mean (2.01±0.34) was recorded in Makurdi collections. The result of the correlation analysis revealed that there was a significant correlation between the plant height and other assessed parameters. The result of the regression analysis on the effects of growth variables on tree plant height had coefficient of (R2 = 0.93). Result of this study showed that location significantly affect germination and growth rate of G.arborea. Moreso, when raising G.arborea seedlings for plantation establishment in middle belt Nigeria, seeds sourced from Lafia should be considered and further research should be carried out on pretreatment of G. arborea seed.


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