Stomata in Abelmoschus (okra)

Epidermal Morphology of West African Okra Abelmoschus caillei (A. Chev.) Stevels from South Western Nigeria

Osawaru M. E., Dania-Ogbe F. M., Chime A. O., Ogwu M. C. (2011)

Department of Plant Biology and Biotechnology, Faculty of Life Sciences, University of Benin, Edo State, Nigeria.

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Science World Journal 6(3): – ISSN 1597-6343 –

file:///C:/Users/wille/Downloads/82218-Article%20Text-197230-1-10-20121012.pdf

ABSTRACT

A study of the micro-morphology of 53 accessions of West African
Okra was undertaken using light microscopy techniques. Results
showed that epidermal cells are polygonal, isodiametric and
irregularly shaped with different anticlinal cell wall patterns.

Stomata type is 100% paracytic and 100% amphistomatic in distribution
among the accessions studied. Stomatal indices ranged from 12.23 to
24.34 with 43.40% accessions ranging between 18.00 to 21.00.
Stomatal were more frequently on the abaxial surface. Similarly,
stomata on the abaxial surface are relatively larger than those of the
adaxial surface and stomatal pore sizes also showed similar trend.

Trichomes were widely distributed, eglandular, solitary and
unicellular types are recorded. These occur in three forms namely,
unicellular filiform, unicellular conical and stellate hairs. Variations
observed in the structure and distributions of the trichomes were
discussed. These micro-morphological features are regarded
diagnostic in this species-caillei rather for circumscription among
accessions studied.

Stomata in Abelmoschus (dicots)

Epidermal morphology of West African okra Abelmoschus caillei (A. Chev.) Stevels from South Western Nigeria

by Osawaru M. E., Dania-Ogbe F. M., Chime A. O., Ogwu M. C. (2011)

in Science World Journal Vol 6 (No 3) 2011

ABSTRACT

A study of the micro-morphology of 53 accessions of West African Okra was undertaken using light microscopy techniques. Results showed that epidermal cells are polygonal, isodiametric and irregularly shaped with different anticlinal cell wall patterns.

Stomata type is 100% paracytic and 100% amphistomatic in distribution among the accessions studied. Stomatal indices ranged from 12.23 to 24.34 with 43.40% accessions ranging between 18.00 to 21.00. Stomata were more frequently on the abaxial surface. Similarly, stomata on the abaxial surface are relatively larger than those of the adaxial surface and stomatal pore sizes also showed similar trend.

Trichomes were widely distributed, eglandular, solitary and unicellular types are recorded. These occur in three forms namely, unicellular filiform, unicellular conical and stellate hairs. Variations observed in the structure and distributions of the trichomes were discussed.

These micro-morphological features are regarded diagnostic in this species – A. caillei – rather for circumscription among accessions studied.

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