K.A. Adeniji’s scientific contributions

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Publications (4)


Epidermal cell features of the genus Jatropha studied
Stomata features of the genus Jatropha studied.
Pollen morphological features of the Jatropha species studied
MORPHOLOGICAL ANALYSIS OF LEAF EPIDEMIS AND POLLEN IN JATROPHA SPECIES FROM NIGERIA
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  • Full-text available

December 2024

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5 Reads

FUDMA Journal of Sciences

Luke Temitope Soyewo

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S. A. Odewo

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B. A. Ajani

The genus Jatropha was investigated through epidermal cell and pollen morphology to enhance species identification beyond conventional floral and vegetative characteristics. Four species of Jatropha in Nigeria was put into considerations on this study (Jatropha curcas, Jatropha multifida, Jatropha. podagrica, and Jatropha. gossypifolia). All species examined exhibited paracytic stomata confined to the adaxial leaf surface, with the abaxial side being devoid of stomata or trichomes. Among the studied species, Jatropha. multifida displayed the largest stomatal length (27.5 µm) and width (17.5 µm), whereas Jatropha. curcas, Jatropha. podagrica, and Jatropha. gossypifolia showed stomatal lengths ranging from 15.0 µm to widths of 12.5 µm. The anticlinal cell walls were generally straight to curve across all species. Pollen grains in the genus were predominantly large, with an exine pattern characteristic of the Croton subfamily. Jatropha. multifida had the smallest gemmae size (2.50 µm) and exhibited the lowest polar axis (52.1 µm) and equatorial diameter (51.6 µm) measurements. These findings suggest that Jatropha species may be highly susceptible to environmental influences, with morphological traits, such as epidermal and pollen structures, varying significantly depending on growth conditions. Environmental factors like temperature, humidity, and soil quality likely impact the development of these traits, leading to observable differences between species. This highlights the value of using epidermal and pollen morphology to distinguish Jatropha species. However, the results also underscore the need for further research on genetic expression to understand the genetic mechanisms driving species variability. A deeper understanding of these mechanisms would improve species identification and support...

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Phytochemical Profiling of Leaf of Glinus lotoides (Mollugineceae) Using GC-MS

June 2023

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11 Reads

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1 Citation

Nigerian Journal of Chemical Research

Glinus lotoides Linn. is a plant used in Nigerian traditional medicine for treating many diseases notably abdominal disorders. Decoction of leaf of the plant is mostly used in this case. This study was carried out in order to determine the bioactive compounds present in the leaf acetone–hexane extract of G. lotoides by using the gas chromatography-mass spectrometry (GC–MS) machine. G. lotoides leaves was extracted in acetone-hexane by cold maceration and concentrated in vacuo. The GC–MS analysis revealed the presence of the following phyto-compounds: 9-Octadecenoic acid, (E) (Z; 242.3975, RT: 16.663; 49.11%), n-Hexadecanoic acid (Z; 256.42, RT: 15.030, 25.58%), Octadecanoic acid (Z; 284.47, RT: 16.785; 6.80%), Stigmasterol (Z; 412.69, RT: 20.929; 5.25%) and Ergost-5-en-3-ol, (3.beta) (Z; 400.68, RT: 19.962; 2.72%) among others. These compounds were identified from leaves of G. lotoides for the first time, and unarguably play very vital roles in the health care system especially in abdominal disorders treatment and other diseases. The study showed that the presence of these compounds in the leaves of G. lotoides might be responsible for its biological activities in traditional medicine. It is therefore a promising important plant of medical and pharmaceutical significance from which drug can be discovered.


Taxonomic implications of foliar epidermal anatomy of Jatropha tanjorensis J.L. Ellis & Saroja and its putative parents

September 2022

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28 Reads

Nigerian Journal of Botany

This study was aimed to determine the relationship among three Jatropha taxa for their reliable identification. Data from reviews showed that J. curcas and J. gossipifolia are the putative parents of J. tanjorensis. Standard method of using Premier Light Microscope, concentrated Trioxonitrate (V) acid, Petri dishes, Methyl-blue and glycerol was employed to carry out the study. Results of the study showed that the three taxa possessed paracytic stomata on both surfaces except in J. gossipifolia where the stomata were only observed on abaxial surface. The cell shape was oblong in J. tanjorensis with undulate anticlinal wall patterns. In J. curcas and J. gossipifolia, the cell shapes and anticlinal wall patterns were irregular and straight, respectively. The stomatal length of the taxa ranged from 11.2 μm to 43.0 μm while the cell length was from 25.0 μm to 84.0 μm. The oblong cell shape and undulate anticlinal walls of J. tanjorensis are its diagnostic characters while the irregular cell shape and amphistomatic leaves are the diagnostic features of J. curcas. Absence of stomata on the adaxial surface with irregular cell shape is unique to J. gossipifolia. The data obtained could be used in conjunction with other characters for reliable identification of the three taxa.


Tree Species Diversity and Distribution in the Natural Forest of Onigambari Forest Reserve, Oyo State, Nigeria

October 2021

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29 Reads

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3 Citations

Journal of Applied Sciences and Environmental Management

Anthropogenic activities has caused depletion of majority of Nigeria forest reserves, reducing forest lands to agricultural lands and grasslands. These prompted this study to consider the diversity of species as well as their species composition in the forest in February 2021. Four sub-plots were established in a cluster with an area of 50m by 50m, with 20m distance between each plots and 10m as edge effect. Twenty five tree species belonging to fifteen families were found in the study site. Family Malvaceae was the most represented. Triplochiton scleroxylon recorded the highest relative importance value (11.23). The diversity indices across the study plots assessed were species richness, evenness, Shannon index and dominance. Dominance indices across the study plots were low, asides for Plot 4 where. Triplochiton scleroxylon was dominant. Simpson index was highest in Plot 1 and lowest at Plot 4. Shannon index was highest, though in moderation in Plot 1 and relatively low in the remaining plots. Evenness indices across the four plots were high. However, the summarized diversity indices for the study site reflected dominance was generally low, Simpson index was high, Shannon index was moderate and Evenness index was moderate. The dendrogram depicted the relationship among the tree species population based on similarities and dissimilarities. Triplochiton scleroxylon belonged to a cluster while every other species with close similarity were categorized under cluster 2.

Citations (1)


... The species diversity indices and evenness index revealed the presence of high tree diversity and even representation of species in the studied forest compared to other forests (Oluwatosin and Jimoh, 2016). Similarly, Olaoti-Laaro et al. (2021), in their study reported that the evenness index and species diversity were moderate, which is in agreement with Salami et al. (2016) and Akinyemi et al. (2020). Notably, the Shannon diversity index value of 2.0443 (Table 2) recorded in this study is lower than the 3.52 and 3.83 reported by Osabiya et al. (2022) for Akure Forest Reserve and Okomu National Park, respectively. ...

Reference:

Tree Species Diversity in Makurdi Zoological Garden, Benue State, Nigeria
Tree Species Diversity and Distribution in the Natural Forest of Onigambari Forest Reserve, Oyo State, Nigeria
  • Citing Article
  • October 2021

Journal of Applied Sciences and Environmental Management