Browsing by Author "Lateef, A.A."

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    Comparative biodiversity assessment of weed species in monocropping plantations of University of Ilorin, Nigeria.
    (Institute for Enviroment and Sanitation Studies, University of Ghana, Legon, 2020) Olayinka, U.B.; Adeyemi, S.B.; Abdulkareem, K.A.; Olahan, G.S.; Lateef, A.A.; Garuba, T.; AbdulRahaman, A.A.
    The present study investigates the weed species diversity in four plantations of university of Ilorin, Ilorin, Nigeria using quadrat method. The survey revealed two major life cycles (annual and perennial) and recorded a total of 88 weed species belonging to 32 families. Four species (Azadirachta indica, Daniellia oliveri, Desmodium tortuosum, and Tridax procumbens) were common in all the surveyed plantations while the family Fabaceae was the most dominant. The abundant weed species analysis showed a high importance value index and were more adapted to the plantations. Diversity analysis revealed high species richness in the sugarcane plantation. The non-canopy nature of the plantation, soil structure as well as ability to coexist with many other species may underscore the reasons for this pattern of diversity. The evenness and similarity indices between and across the plantations were generally low, thus, indicating varying diversity. As a result of the recorded variation in weed composition between and across the plantations, the study has provided an insight on the pattern of weed diversity in the studied plantations. The study recommended that the most abundant weed species populations be checked for the plantations to thrive. Finally, there is an urgent need to conserve weed species that are not only rare in abundance but also showed great social and economic values.
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    Microorganisms associated with some selected leafy vegetables sold in some markets in Ilorin, Kwara State
    (Department of Biological Sciences, Faculty of Science, Bayero University, Kano, Nigeria, 2014-06-06) Olahan, G.S; Garuba, T; Adeyemi, S.B.; Lateef, A.A.; Olahan, S.A.
    Microorganisms associated with some commonly consumed leafy vegetables in popular markets of Ilorin, kwara State were investigated. The leafy vegetables were Amaranthus hybridus, Brassica oleraceae and Telfairia occidentalis. Seven species of bacteria were isolated namely Escherichia Coli, Staphylococcus aureus, Bacillus subtilis, Pseudomonas aeruginosa, Enterobacter aerogenes, streptococcus faecalis and Micrococcus luteus. Six species of fungi were equally isolated from some of the same leafy vegetables namely Aspergillus niger, A. Flavus, Rhizopus stolonifer, Neurospora sitophila, penicillium chrysogenum and Mucor racemosus. The isolates which are pathogenic might have arisen from conditions in the field and gardens where the leafy vegetables were grown, during transportation of the leafy vegetables to the market or as a result of the filthy environment in the markets where the leafy vegetables were obtained for this study. Therefore there is a great need for increased awareness on environmental hygiene in those fields and gardens and the market as well as sensitization of the farmers and traders on the need to adopt the modern technologies of transporting, storing and handling leafy vegetables.
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    Molecular Characterisation of Some Accessions of Corchorus olitorius l.
    (Faculty of Science, Federal University Birnin Kebbi, 2019-12) Abdulkareem, K.A; Sidiq, K.A; Olayinka, B.U.; Lateef, A.A.; Garuba, T.; Olahan, G.S.; Adeyemi, S.B.; Sagaya, A.; Tiamiyu, B.B.; Abdulrahman, A.A.
    Nigeria has several native leafy vegetables that have been neglected. Corchorus olitorius belongs to this group. Genetic diversity was studied in five accessions of the plant using sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS - PAGE). The aim was to determine the relationship (differences and similarities) among them. Sixteen polypeptide bands were obtained ranging from 12.29 KDa to 170 KDa indicating variations in the banding patterns of the accessions. The unweighted pair group method with arithmetic algorithm (UPGMA) dendrogram grouped the five accessions into three clusters with four groups showing 60% of the accessions in one group. The greatest similarity (96%) observed was between NGB00196 and NGB00194 while the lowest similarities (32%) NGB00191 and (40%) NGB00187. Adopting this technology can be useful in plant variety identification and registration of new plant varieties. NGB00191 was observed to be distantly related to the other accessions hence could be combined in a breeding programme.
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    Molecular characterization of potential crop pathogens associated with weeds as endophytes in Unilorin plantations, Nigeria.
    (College of Science for Women, University of Baghdad, Jadriah, Baghdad, Iraq., 2022-05-20) Lateef, A.A.; Garuba, T.; Abdulkareem, K.A.; Olayinka, B.U.; Olahan, G.S.; Adeyemi, S.B.; AbdulRahaman, A.A.
    Crop diseases are usually caused by inoculum of pathogens which might exist on alternate hosts or weeds as endophytes. These endophytes, cum pathogens, usually confer some beneficial attributes to these weeds or alternate hosts from protection against herbivores, disease resistance, stress tolerance to secondary metabolites production. This study was therefore carried out to isolate potential crop pathogens which exist as endophytes on weed species in the University of Ilorin plantations. Green asymptomaticleaves were collected from 10 weed species across the plantations, and processed for their endophytic fungi isolation. Isolates were purified into pure cultures and used for molecular identification using the internal transcribed spacer (ITS) region of the ribosomal DNA. Phylogenetic analysis of the fungal sequences using MEGA software revealed 9 fungal genera belonging to 13 species, with species in the genera Curvularia, Epicoccumand Daldiniaoccurring in more than one weed species, while other genera such as Alternaria, Fusarium, Chaetomium, Macrophomina, Arthriniumand Phomopsisoccurred in just one weed species each. Daldinia eschscholtziiwas isolated in this study as an endophyte from Loudetia arundinaceafor the first time. This plant is very abundant in Nigeria and Africa where it is used majorly for thatching and feeding livestocks. This also represents the first endophytic fungi from the genus Loudetia. Potential relationship between the occurrences of these fungi as endophytes and as pathogens are discussed. These discoveries represent the first large-scale molecular identification and several first reports of endophytes from these weed species. These results also represent the first records of some of these fungi in Nigeria.