Abstract
Nigeria, the study area lies between latitude 40 and 140 north of the equator and between longitudes 30 and 150 east of the Greenwich meridian with two major landforms- lowlands and highlands. The vegetation is made up of forests in the southern part and savanna in the northern part. The major soil types are ferruginous tropical soils, lithosols, vertisols, regosols, ferrasols and alluvial soils. Cytological and morphological studies were carried out on Nigerian Vernonia adoensis Lowe & Soladoye. Chromosome counts of n=10 was obtained for Vernonia stenostegia while V. tenoreana and V. kotschyana had n=9 which differed from earlier report. Pollen fertility test revealed that the 3 different species had normal regular bivalent pairing during meiosis, suggesting that they were diploids and hybridization was not responsible for their differences. Anonocytic stomata withagenous ontogeny was observed in all the 3 species, the epidermal walls of the 3 species differed from each other, the presence of contiguous stomata in V. tenoreana and the presence of eglandular multicellular trichomes in V. stenostegia and V. tenoreana is reported for the first time. the achenes of the 3 species differed from each other. Ecological, morphological and cytological observations have been discussed. They have proved that the habit and habitat preference is not responsible for their differences and thus V. adoensis was actually 3 species lumped together.
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Claims 10
Claim · model-written summary
Vernonia stenostegia had chromosome count n=10.
Verbatim
e0“Chromosome counts of n=10 was obtained for Vernonia stenostegia”
Claim · model-written summary
V. tenoreana had chromosome count n=9.
- Taxon
- V. tenoreanaBaccharoides tenoreanae0
- Outcome
- n=9e0
- Value
- n=9e0
Verbatim
e0“V. tenoreana and V. kotschyana had n=9”
Claim · model-written summary
V. kotschyana had chromosome count n=9.
Verbatim
e0“V. tenoreana and V. kotschyana had n=9”
Claim · model-written summary
The three species had regular bivalent pairing and were interpreted as diploids.
- Taxon
- VERNONIA ADOENSIS
Baccharoides adoensist0 - Outcome
- normal regular bivalent pairing during meiosise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the 3 different species had normal regular bivalent pairing during meiosis, suggesting that they were diploids”
t0“VERNONIA ADOENSIS”
Claim · model-written summary
The three species had anonocytic stomata.
- Taxon
- VERNONIA ADOENSISBaccharoides adoensist0
- Outcome
- Anonocytic stomata withagenous ontogenye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Anonocytic stomata withagenous ontogeny was observed in all the 3 species”
t0“VERNONIA ADOENSIS”
Claim · model-written summary
The three species differed in epidermal walls and achenes.
- Taxon
- VERNONIA ADOENSISBaccharoides adoensist0
- Outcome
- epidermal walls of the 3 species differed from each othere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the epidermal walls of the 3 species differed from each other”
e1“the achenes of the 3 species differed from each other”
t0“VERNONIA ADOENSIS”
Claim · model-written summary
Contiguous stomata were reported in V. tenoreana.
- Taxon
- V. tenoreanaBaccharoides tenoreanae0
- Outcome
- presence of contiguous stomatae0
Verbatim
e0“the presence of contiguous stomata in V. tenoreana”
Claim · model-written summary
Eglandular multicellular trichomes were reported in V. stenostegia.
Verbatim
e0“the presence of eglandular multicellular trichomes in V. stenostegia and V. tenoreana”
Claim · model-written summary
Eglandular multicellular trichomes were reported in V. tenoreana.
- Taxon
- V. tenoreanaBaccharoides tenoreanae0
- Outcome
- presence of eglandular multicellular trichomese0
Verbatim
e0“the presence of eglandular multicellular trichomes in V. stenostegia and V. tenoreana”
Claim · model-written summary
V. adoensis was concluded to comprise three species.
- Taxon
- V. adoensisBaccharoides adoensise0
- Outcome
- 3 species lumped togethere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“V. adoensis was actually 3 species lumped together”