The Value of Leaf Epidermal Characters in Diagnosing Some Nigerian Species of Ficus L. (Moraceae)

Ogunkunle, A. T. J.

doi:10.3923/rjb.2013.1.14

Cited by 7 publications

(9 citation statements)

References 5 publications

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“…Americanae are featured in quite small stomatal guard cells compared to the size of primary epidermal cells if seen in a transverse section, and the stomata are often slightly protruded from the epidermis. Certain authors (Ogunkunle and Oladele 2008;Ogunkunle 2013) reported about the diagnostic value of the number of subsidiary cells in Ficus, which is not confirmed in our study. Likewise to our results, in many studies, the stomatal type in Ficus is defined as anomocytic (Grambast 1954;van Greuning et al 1984;Klimko and Truchan 2006;Araújo 2012).…”

Section: Discussioncontrasting

confidence: 81%

“…Likewise to our results, in many studies, the stomatal type in Ficus is defined as anomocytic (Grambast 1954;van Greuning et al 1984;Klimko and Truchan 2006;Araújo 2012). However, some evidence occur in the literature as for actinocytic, anisocytic, diacytic, paracytic, and polycytic types (Sonibare et al 2005;Ogunkunle and Oladele 2008;Glukhov and Strelnikov 2011;Khan et al 2011;Ogunkunle 2013;Chantarasuwan et al 2014). Certain authors indicate the presence of several stomatal types in one Ficus species or even on the same leaves (Ogunkunle and Oladele 2008;Glukhov and Strelnikov 2011).…”

Section: Discussionmentioning

confidence: 89%

“…In recent works, for instance, they were found useful for distinguishing Ficus infrageneric taxa (Ogunkunle and Oladele 2008;Ogunkunle 2013). Other studies showed their diagnostic value for the species, but not higher taxa of Ficus (van Greuning et al 1984;Loutfy et al 2005;Khan et al 2011).…”

Section: Introductionmentioning

confidence: 93%

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Microscopical investigation of the leaf architecture in greenhouse-cultivated Ficus (Moraceae)

Sosnovsky

2014

Plant Syst Evol

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A high diversity of leaf structural traits in the genus Ficus is often argued with regard to its taxonomic implications. Greenhouse-cultivated plants of Ficus are in special need of identification based on the vegetative organs since they rarely produce flowers. We studied the leaf anatomy in 33 Ficus species of six subgenera and 12 sections grown under greenhouse conditions, using light microscopy and SEM. A great between-species variation of the leaf traits was revealed as opposed to their stability within each species. Qualitative leaf traits were found useful for distinguishing species and some higher taxa of Ficus. Namely, the features of epidermis, mesophyll, and vein anatomy were characteristic at the level of sections and subsections. Quantitative parameters of stomata and glandular trichomes, as well as the thickness of lamina and its inner layers, separated well the species and subgenera of Ficus. The classification of the species based on the quantitative leaf parameters revealed several groups of related species, which are placed close in the existing system of the genus. New data on Ficus leaf architecture were obtained, including the presence of branched trichomes, the features of vein anatomy, and the diagnostic value of laminar hydathodes. The study shows that many characters of Ficus leaf architecture are of taxonomic value and provide support to the existing classification of the genus. The leaf anatomical and surface features analyzed may facilitate a proper identification of the species and higher taxa of Ficus if considered together in a complex.

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Section: Discussioncontrasting

confidence: 81%

Section: Discussionmentioning

confidence: 89%

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Microscopical investigation of the leaf architecture in greenhouse-cultivated Ficus (Moraceae)

Sosnovsky

2014

Plant Syst Evol

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“…There has been some documentation in which epidermal markers were used to discriminate plant taxa [14,[16][17][18][19]. Results obtained from this study clearly demonstrated that epidermal markers could provide a reasonable value for discriminating the selected medicinal tree species of apocynaceae.…”

Section: Discussionmentioning

confidence: 59%

Taxonomic Value of Leaf Epidermal Markers in Discriminating Some Medicinal Tree Species of Apocynaceae Juss

Onefeli

Kehinde

2020

The 1st International Electronic Conference on Forests—Forests for a Better Future: Sustainability, Innovation, Inter

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Apocynaceae is a useful family comprising of trees notable for different medicinal remedies. Consequent to their importance vis-à-vis scarcity in the forest, they are being sold in various Nigerian markets by herb sellers mostly in sterile and fragmentary forms. Hence, the medicinal plants are subjected to adulteration and substitution. Frequently, identification of the plants by users is basically with the aid of floristic markers, which are not readily available for such purpose. It, therefore, becomes pertinent to carry out the taxonomic revision of these trees to provide additional markers that will contribute to their effective identification for correct use. Various documentations have been made on members of apocynaceae and are properly placed on their respective taxa using epidermal traits. However, such information is scarce for Alstonia boonei, Holarrhena floribunda, Rauvolfia vomitoria, Thevetia nerifolia and Vocanga africana. This study therefore aimed at providing epidermal taxonomic markers that could be employed in delimiting the species as an alternative when the fruit or floral parts are wanting. Leaf epidermises of five (5) species of apocynaceae representing 5 genera were studied under a Biological microscope with a camera attachment. Data obtained were statistically analyzed. The epidermal cell was penta or hexagonal in A. boonei and V. africana. The stomatal length varied from 20.88 µ m (R. vomitoria) to 25.92 µ m (T. nerifolia) and 18.96 µ m (R. vomitoria) to 29.28 µ m (V. africana) on the abaxial and adaxial layers respectively. All the epidermal characters on the adaxial layer were significantly different (p<0.05) among the species. Anticlinal walls were sinuated in H. floribunda and T. nerifolia while in R. vomitoria, it was straight to wavy. V. africana and A. boonei anticlinal walls were straight. This study represents the first account of epidermal characterization of the members of apocynaceae in Nigeria and is of taxonomic importance in setting boundaries among the species.

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“…The formats, styles and modes of application of the artificial key types encountered in the literature were then described and illustrated using epidermal and wood anatomical features from some species of Ocimum, Hyptis and Ficus in Nigeria. Details of voucher information, data collection and character definition for this purpose are contained in Ogunkunle (1989Ogunkunle ( , 2013 and Ogunkunle and Oladele (1997, 2008. Some properties common to all the keys were identified and used for their comparative assessment.…”

Section: Literature Searchmentioning

confidence: 99%

Properties, users assessment and applicability of nine types of taxonomic keys in diagnosing some Nigerian species of Ocimum L., Hyptis Jacq. and Ficus L.

Ogunkunle¹

2014

Afr. J. Plant Sci.

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Nine types of taxonomic keys have been listed from the literature. These are the dichotomous, numerical, multi-access table of identification, punched-card, columnar-diagram, graphical, flow-chart, pictorial-diagram and circular-diagram keys. In this study, each type of key was observed at two levels namely, its format (which is its peculiarity, depicting the general plan, arrangement or organization of its elements) and style (which is one-to-several structural variants in which a key format may be presented in printable form). The format of each type of key along with its representative styles (which determines whether a key is single-access or multiple-access) is illustrated using anatomical features of six Nigerian species of Ocimum L., four of Hyptis Jacq., and 12 of Ficus L. The systematic mode of application and spectrum of usage of each key are discussed and the users' opinions on its usability, efficiency, prospects, users' familiarity and general acceptability are presented. The strengths and limitations of the key formats are also evaluated and discussed on the basis of which taxonomists are charged to consider research efforts towards improving upon the qualities, and devising new key formats with the prospect for better performance.

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The Value of Leaf Epidermal Characters in Diagnosing Some Nigerian Species of Ficus L. (Moraceae)

Cited by 7 publications

References 5 publications

Microscopical investigation of the leaf architecture in greenhouse-cultivated Ficus (Moraceae)

Microscopical investigation of the leaf architecture in greenhouse-cultivated Ficus (Moraceae)

Taxonomic Value of Leaf Epidermal Markers in Discriminating Some Medicinal Tree Species of Apocynaceae Juss

Properties, users assessment and applicability of nine types of taxonomic keys in diagnosing some Nigerian species of Ocimum L., Hyptis Jacq. and Ficus L.

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