Browsing by Author "Popoola, Jacob O."

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    Dataset on rbcL gene intra and inter-specific diversity and phylogenetic relationship of eggplants ( Solanum species) in Southern Nigeria
    (Data in Brief (Elsevier), 2025) Ajiboye, Babafemi I.; Popoola, Jacob O.; Eni, Angela O.; Omonhinmin, Conrad A.
    Eggplant ( Solanum sp.) is the third most widely cultivated solanaceous vegetable globally, and it is commonly con- sumed in Nigeria, particularly in Southern Nigeria, for its nutritious and medicinal fruit, leaves, and seeds. The taxon has recorded array of ethnobotanical uses ranging from food, medicine to cultural interactions in ceremonies. Despite the enormous range of a value, studies have shown decreas- ing eggplant varietal diversity, directly linked with cultiva- tion preferences and activities, such as exchanging propag- ules within and between agroecological areas and farms. Ad- ditionally, the wide range of accessions in the taxa, mor- phological plasticity, and genetic similarity among acces- sions have resulted in the ambiguity and inconsistent phy- logenetic classification of the taxa. The dataset consists of partial ribulose-1,5-bisphosphate carboxylase/oxygenase large subunit ( rbcL ) gene sequences, nucleotide compositions and amino acid profiles of 75 accessions of eggplants collected from across Southern Nigeria. The genetic information pro- vided by the dataset offers insight into the genetic diversity and the phylogenetic relationships of the eggplant accessions, which could serve as a baseline for designing effective strate- gies for sustainable cultivation, conservation, utilisation, and improvement of the taxa.
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    Dataset on rbcL-based intra-specific diversity and population structure of Parkia biglobosa (Jacq.) in Nigeria
    (Data in Brief (Elsevier), 2024) Omonhinmin, Conrad A.; Taiwo, Nchedo S.; Okonkwor. Paul B.; Ajayi, Israel M.; Akinduti, Paul Akinniyi; Aworunse, Oluwadurotimi S.; Ajiboye, Ibukun; Taiwo, Olugbenga S.; Adekeye, Bosede Temitope; Oziegbe, Olubukola; Bello, Adetutu O.; Ahuekwe, Eze Frank; Oyekanmi, Joshua; Olufowobi, Olanrewaju; Oniha, Margaret Ikhiwili; Oshamika, Oyewumi; Ejoh, Samuel A.; Adewale, Adeyemi G.; Akinnola, Olayemi O.; Oranusi, Solomon U.; Popoola, Jacob O.
    African locust bean ( Parkia biglobosa ) is a multipurpose legu- minous tree species of nutritional and pharmacological value. The plant is widely distributed in Africa and across Nige- ria’s major agroecological areas (AEAs). Amidst declining cul- tivation and production, P. biglobosa is genetically threatened in its natural habitats due to overexploitation, deforestation, wildfires and lack of improved tree management practices. Consequently, concerted research efforts directed towards germplasm collection and assessment of genetic relation- ships are imperative for conserving its genetic resources, sustainable management and selecting promising landraces for breeding programmes. The dataset presents rbcL in- traspecific genetic diversity and population structure of 62 P. biglobosa landraces in Nigeria. A relatively high level of diversity and a low degree of nucleotide variability was observed among the landraces. Relatively high values of 642 total allele sites, 601 polymorphic sites, 504 parsimony information sites, 883 total number mutations, 9 haplotypes and 0.55 gene diversity were recorded for the sequence dataset. Low values of 0.35 nucleotide diversity and 5 InDels events were also recorded for the dataset. The gene flow in this dataset demonstrated an extensive exchange of genes between the three populations of P. biglobosa, which influenced the level of genetic differentiation (Gst) between the populations. Significantly low Gst (-0.01) was recorded between the Guinea and Sudan savannah populations, a moderate value (0.03) was recorded between the Sudan savannah and Rainforest populations and a higher Gst value (0.05) was recorded between the Guinea and Rainforest populations. The dataset highlights potential evolutionary dynamics that might influence variations relevant to the breeding and conservation of P. biglobosa in Nigeria and across its range in West and Central Africa.