INFLUENCE OF TEMPERATURE ON EARLY GROWTH OF Pterocarpus santalinoides L’Hérit. ex DC.


  • C. Fredrick Department of Forestry and Wildlife Management, Faculty of Agriculture, University of Port Harcourt, Rivers State, Nigeria
  • E. A. U. Ofodile Department of Forestry and Wildlife Management, Faculty of Agriculture, University of Port Harcourt,323, Choba, Rivers State, Nigeria
  • A. O. Basiru Department of Forestry and Wildlife Management, College of Environment Resources Management, Federal University of Agriculture, Abeokuta, Ogun State, Nigeria
  • G. E. Omokhua Department of Forestry and Wildlife Management, Faculty of Agriculture, University of Port Harcourt, Rivers State, Nigeria


Pterocarpus santalinoides, Temperature variation, Early growth, Seedling biomass


This study evaluated the effect of temperature on the early growth of Pterocarpus santalinoides seedlings. In a completely randomized experiment, 80 randomly selected seedlings were subjected to four temperature regimes namely: 20/27±3°C, 22/30±3°C, 25/33±3°C and 27/35±3°C. Initial measurements of seedling growth variables were done, four months after sowing and bi-monthly thereafter for twelve months. Variables such as seedling height, stem collar diameter, number of leaves, root length, shoot and root fresh and dry weights, moisture content, total weight and root to shoot ratio were monitored. Data were analysed using Analysis of Variance and Duncan Multiple Range Test was used to separate significantly different means. There were significant differences in the height, collar diameter, number of leaves, root length and biomass of Pterocarpus santalinoides seedlings grown at different temperatures. After four months, the highest height (35.05 cm) was observed for 22/30±3°C treatment, while lowest (28.11) was for 27/35±3°C. From 6 to 12 months, the highest heights: 31.37 cm, 38.04 cm, 45.15 cm and 50.51 cm, respectively, were observed for 25/33±3°C treatment, while the lowest (31.37 cm, 38.04 cm, 45.15 cm and 50.51 cm) were for 20/27±3°C treatment. Highest collar diameters (5.34 mm, 6.88 mm, 8.65 mm, 9.83 mm and 10.48 mm) were observed at 27/35°C±3°C and lowest 3.82 mm, 4.42 mm, 5.86 mm, 6.61 mm and 8.61 mm) at 20/27oC±3°C, from 4 to 12 months. The longest (44.88 mm) and least (30.58 mm) root lengths were observed at 25/33°C±3°C and 20/27oC±3°C, respectively. Pterocarpus santalinoides seedlings grew at all tested temperature regimes, with better growth observed at 25/33oC and 27/35oC.


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How to Cite

Fredrick, C., Ofodile, E. A. U., Basiru, A. O., & Omokhua, G. E. (2024). INFLUENCE OF TEMPERATURE ON EARLY GROWTH OF Pterocarpus santalinoides L’Hérit. ex DC. RENEWABLE, 4(1), 26–32. Retrieved from