Propagation of Pterocarpus erinaceus Poir. seeds from four vegetation zones of Nigeria, using different pre-sowing treatments and sowing media

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Research Paper 16/05/2023
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Propagation of Pterocarpus erinaceus Poir. seeds from four vegetation zones of Nigeria, using different pre-sowing treatments and sowing media

SR. Kolapo, AO. Akinyele, SO. Jimoh, MA. Kolapo
J. Bio. Env. Sci.22( 5), 92-103, May 2023.
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Pterocarpus erinaceus Poir. is a tree species of the family Leguminonaseae distributed across West and Central Africa. The surging demand for its wood has hampered its natural regeneration in Nigeria. Effects of pre-sowing treatments and soil media on the germination of its seeds were examined using stratified random sampling. Seeds were sourced from Guineo-Sudanian savanna, Southern Guinea savanna, Derived/Guinea savanna and Northern/Southern Guinea savanna. Pre-sowing treatments including: water (270C, 500C, and 750C for 8 hours, 16 hours and 24 hours), mechanical scarification (nicking at micropyle, 50% and 100% seed coat removal); and acid scarification (25%, 50% and 75% H2S04 for one minute, four minutes and seven minutes). Sowing media used included river sand, topsoil and mixture of river sand and topsoil at ratio 1:1. Cumulative germination percentage, germination rate, number of days to germination and germination spread were recorded. Data were analyzed using: ANOVA and descriptive statistics. Pre-sowing treatments and sowing media had significant effects (p <0.05) on all the variables assessed, but the latter did not significantly affect cumulative germination percentage. The study shows that seeds of African rosewood soaked in water at room temperature for 24 hours had highest cumulative germination when sown in equal proportion of river sand and topsoil.


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