Effect of Aqueous, Ethanolic and N-hexane Extracts of Annona senegalensis on Germinability of Okra Seeds
O. I. Adejobi *
Department of Biological Sciences, Landmark University, PMB 1001, Omu-Aran, Kwara State, Nigeria
N. D. Torjir
Department of Biological Sciences, Landmark University, PMB 1001, Omu-Aran, Kwara State, Nigeria
*Author to whom correspondence should be addressed.
Abstract
Annona senegalensis, generally known as African custard-apple has been indicated to inhibit the growth of pathogenic strains of Shigella flexneri, Staphylococcus aureus and Pseudomonas aeruginosa while flavonoids isolated from the stem bark of Annona senegalensis have been shown to inhibit the growth of Salmonella typhi, Escherichia coli, and Shigella sp. The aim of this study was to develop a safe, cheap and cost effective treatment against selected plants pathogens and also at evaluating the protective potential of the extracts of Annona senegalensis against selected fungal pathogens of okra seeds. In this study, the effect of Aqueous, Ethanolic and N-hexane Extracts of Annona senegalensis on germinability ofAbelmoschus esculentus was observed. A total of ten different concentrations (1000 mg/L to 10000 mg/L) of the respective crude extracts were used for the study. To each universal bottle containing 20 mL of the known concentrations of the respective extracts, approximately 20 surface sterilized seeds were added and allowed to stand for 30 min. At the termination of the planting period, the seedling height, % germination, germination rate, germination time, germination capacity, germination index and seeds vigor of each of the slots were estimated. In conclusion, it can be seen from the results of the study that aqueous, ethanol and N-hexane A. senegalensis extracts solution tested in this study have priming and antifungal potency.
Keywords: Annona senegalensis, germinability, aqueous, ethanolic and N-hexane extracts