_____________________________________________________________________________________________________ *Corresponding author: E-mail: akpor.oghenerobor@lmu.edu.ng; Journal of Agriculture and Ecology Research International 10(1): 1-11, 2017; Article no.JAERI.29753 ISSN: 2394-1073 SCIENCEDOMAIN international www.sciencedomain.org Seed Vigour Enhancement and Protective Potential of Annona senegalensis Leaf Extracts against Fungal Pathogens of Sorghum Seeds O. B. Akpor 1* and A. O. Salami 1 1 Department of Biological Sciences, Landmark University, PMB 1001, Omu-Aran, Nigeria. Authors’ contributions This work was carried out in collaboration between both authors. Author OBA designed the study, interpreted the results, performed the statistical analysis, wrote the protocol and wrote the first draft of the manuscript. Author AOS performed the experiment, interpreted the results and contributed to the first draft of the manuscript. Both authors read and approved the final manuscript. Article Information DOI: 10.9734/JAERI/2017/29753 Editor(s): (1) Petropoulos Spyridon, Department of Agriculture Crop Production and Rural Environment, University of Thessaly, Greece. Reviewers: (1) Azhar Mehmood, University College of Agriculture and Environmental Sciences, The Islamia University of Bahawalpur, Pakistan. (2) Cletus Anes Ukwubile, University of Ibadan and Department of Science Laboratory Technology, Federal Polytechnic, Nigeria. Complete Peer review History: http://www.sciencedomain.org/review-history/17289 Received 27 th September 2016 Accepted 26 th October 2016 Published 20 th December 2016 ABSTRACT Medicinal plants are in nature and are cultivated worldwide and also commercially. This study was aimed at assessing the protective potential of leaf extracts of Annona senegalensis against selected fungal pathogens of sorghum seeds. Before the use of the seeds, they were checked for viability and surface sterilized. In this study, the effective concentration, optimum soaking time, protective potential of the extract and antibacterial effect of the extracts were carried out. During each setup, at the end of the planting period, percentage germination, germination index, germination capacity, germination rate, germination time and seed vigour were calculated. The most effective concentrations of the aqueous, n-hexane, ethanol extracts of Annona senegalensis and copper sulphate solution were observed to be 2000 mg/L, 7000 mg/L, 2000 mg/L and 5000 mg/L respectively while the best soaking times of the seeds in the copper sulphate solution, aqueous and n-hexane extracts of Annona senegalensis were 30 min while for ethanol extract was 60 min. The infected seeds that were treated with the extracts showed high level of germination and seed vigour. This study was able to reveal the potential of Annona senegalensis in the Original Research Article