The science of the stomata of plants: a continuously growing list of references, abstracts and illustrations, helping researchers to data on publications.
Data on stomatal structure and distribution of 40 Nigerian dicotyledonous weeds are presented. Five stomatal types, paracytic, anomocytic, diacytic, anisocytic and pericytic were observed. The first three stomatal types occurred equally frequently. The were some species with two types or even three types of stomata on the same plant. Two species were hypostomatous and the others were amphistomatous. Stomatal indices ranged from 12 to 39.
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.
Data on stomatal structure and distribution of 40 Nigerian dicotyledonous weeds are presented. Five stomatal types, paracytic, anomocytic, diacytic, anisocytic and pericytic were observed. The first three stomatal types occurred equally frequently. The were some species with two types or even three types of stomata on the same plant. Two species were hypostomatous and the others were amphistomatous. Stomatal indices ranged from 12 to 39.
Oka-Uselu is an indigenous maize variety (Zea mays), which is the main grain crop of the Benin speaking people of Edo state, Southern Nigeria.
In this study, Oka Uselu was compared with an improved maize cultivar [IMC] using plant height, leaf length and width, tassel number, cob per plant, kernel per cob and tassel length. Both maize varieties were collected within Edo State and planted at the Experimental Field of University of Benin, Nigeria.
Morphological results revealed that Oka-Uselu was true bred by maintaining all its features such as early flowering, short height and small sized cobs, which were well set. The IMC had higher values for all the morphological characters evaluated.
The stomata of both varieties were amphistomatic with stomata found on both surfaces. Stomata on the adaxial surface were larger than those of abaxial surface. More so, the epidermal morphology revealed mature paracytic and epidermal walls sinuously walled, stomata abnormality were completely absent.
The results of this study suggest that Oka-Uselu is a promising maize variety that may be improved for dry season production.
Data on stomatal structure and distribution of 40 Nigerian dicotyledonous weeds are presented.
Five stomatal types, paracytic, anomocytic, diacytic, anisocytic and pericytic were observed. The first three stomatal types occurred equally frequently. There were some species with two types or even three types of stomata on the same plant.
Two species were hypostomatous and the others were amphistomatous.
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.
PLANT STOMATA ENCYCLOPEDIA 
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