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Effect of Pretreatments on Germination and Growth of Berlinia grandiflora (Caesalpiniaceae) (Vahl) Hutch. & Dalz

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Author Affiliations

  • 1Laboratry of Biodiversity and Sustainable Development, Faculty of Science, the University of Ngaoundéré, P.O. Box: 454 Ngaoundéré, Cameroon
  • 2Department of Plant Sciences, Faculty of Science, The University of Bamenda, Cameroon P.O. Box: 39 Bambili, Bamenda, Cameroon
  • 3Institute for Medical Research and Studies of Medical Plants, Cameroon P.O. Box: 6163 Yaoundé, Cameroon
  • 4Laboratry of Biodiversity and Sustainable Development, Faculty of Science, the University of Ngaoundéré, P.O. Box: 454 Ngaoundéré, Cameroon
  • 5Laboratry of Biodiversity and Sustainable Development, Faculty of Science, the University of Ngaoundéré, P.O. Box: 454 Ngaoundéré, Cameroon
  • 6Laboratry of Biodiversity and Sustainable Development, Faculty of Science, the University of Ngaoundéré, P.O. Box: 454 Ngaoundéré, Cameroon

Res. J. Agriculture & Forestry Sci., Volume 12, Issue (1), Pages 1-5, January,8 (2024)

Abstract

Berlinia grandiflora is an agroforestry species of socio-economic interest in the Adamawa region of Cameroon. Seeds of this species are traded internationally between Cameroon and Nigeria. Regeneration of this species by seed is rare in its natural environment. The objective of the study was to apply pretreatments to seeds in order to study the germination and growth of B. grandiflora plants in nursery. The work consisted in applying five pre-treatments to the seeds which are manual scarification, soaking in tap water for 12 hours, soaking in boiling water without a heat source for 2 minutes, soaking in sulfuric acid for 10 minutes and control. The experimental design was a complete randomized block with four repetitions and the experimental unit consisted of 42 seeds. Germination and morphological aspects of seedling growth were monitored for 70 days. Germination time was 5 days. The germination rate varies from 80.35% for scarified seeds to 32.14% for seeds soaked in boiling water for 2 minutes. The analysis of variance shows a difference between the different pretreatments (0.0006 < 0.001). Concerning the growth parameters, the height of the seedlings varies from 14.07±1.98cm in seedlings grown from seeds soaked in tap water for 12 hours to 10.95±1.08 cm in seedlings grown from seeds soaked in boiling water without a heat source for 2 minutes. The analysis of variance of the heights of the plants from the different pre-treatments shows a significant difference (0.02<0.05). This study aims to better understand the germination and growth characteristics of this species in order to ensure its sustainability.

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