Abstract
The influence of humans on biodiversity at the genetic, species, community, and ecosystem levels is enormous. This is even more impactful on plant populations, which, being immobile, are at the mercy of their immediate environment. Digitaria horizontalis is a very common grass species in Benin City. Its ruderal nature accounts mostly for its widespread. The current study investigated the existence of possible genetic diversity of the grass in built environment in Benin City. Plant samples were randomly collected from 21 built environment locations within 6 Local Government Council Areas that make up Benin City. Test plants were allowed to acclimatize in experimental bowls and then allowed to grow for 4 weeks after which morphological characteristics were determined. Genetic diversity was determined by Random Amplification of Polymorphic DNA. Significant differences in plant height (33.0 – 59.0 cm) occurred when plants were compared based on location of collection. Changes in patterns of the association with weeds within the vicinity of the test plant was observed. The most prevalent plant species associated with the test plant was Pennisetum purpureum with a 12.18% prevalence. RAPD analysis using primer OPA 04 revealed a locus (about 600bp) that was absent in one or more of the locations with minimum disturbance. This 600pb fragment was however observed in most samples from highly built up and trampled environments. Primer OPA 03 showed monomorphic bands in 2 test samples with a band size of 400bp. It is therefore reported that there is an existence of the genetic diversity in a landscape of grass species (Digitaria horizontalis) found in different built environment in Benin City, Edo State, Nigeria.
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Claims 7
Claim · model-written summary
Plant height differed significantly among collection locations, ranging from 33.0 to 59.0 cm.
Verbatim
e0“Significant differences in plant height (33.0 – 59.0 cm) occurred when plants were compared based on location of collection.”
e1“Digitaria horizontalis is a very common grass species in Benin City.”
Claim · model-written summary
The pattern of weed associations near Digitaria horizontalis changed.
- Taxon
- Digitaria horizontalisDigitaria horizontalise1
- Outcome
- patterns of the association with weedse0
Verbatim
e0“Changes in patterns of the association with weeds within the vicinity of the test plant was observed.”
e1“Digitaria horizontalis is a very common grass species in Benin City.”
Claim · model-written summary
Pennisetum purpureum was the most prevalent associated species, at 12.18%.
- Taxon
- Digitaria horizontalisDigitaria horizontalise1
- Interactor
- Pennisetum purpureum
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Cenchrus purpureuse0other - Outcome
- prevalencee0
- Direction
- most prevalente0
- Value
- 12.18%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The most prevalent plant species associated with the test plant was Pennisetum purpureum with a 12.18% prevalence.”
e1“Digitaria horizontalis is a very common grass species in Benin City.”
Claim · model-written summary
An approximately 600bp OPA 04 locus was absent from one or more minimally disturbed locations.
Verbatim
e0“RAPD analysis using primer OPA 04 revealed a locus (about 600bp) that was absent in one or more of the locations with minimum disturbance.”
e1“Digitaria horizontalis is a very common grass species in Benin City.”
Claim · model-written summary
The 600pb fragment appeared in most samples from heavily built and trampled environments.
- Taxon
- Digitaria horizontalisDigitaria horizontalise1
- Outcome
- fragment was however observede0
- Value
- 600pbe0
- Setting
- highly built up and trampled environmentse0
Verbatim
e0“This 600pb fragment was however observed in most samples from highly built up and trampled environments.”
e1“Digitaria horizontalis is a very common grass species in Benin City.”
Claim · model-written summary
OPA 03 showed 400bp monomorphic bands in two samples.
- Taxon
- Digitaria horizontalisDigitaria horizontalise1
- Outcome
- monomorphic bandse0
- Value
- 400bpe0
- Qualifier
- 2 test samplese0
Verbatim
e0“Primer OPA 03 showed monomorphic bands in 2 test samples with a band size of 400bp.”
e1“Digitaria horizontalis is a very common grass species in Benin City.”
Claim · model-written summary
Digitaria horizontalis shows genetic diversity across built environments of Benin City.
- Taxon
- Digitaria horizontalisDigitaria horizontalise0
- Outcome
- genetic diversitye0
- Setting
- Benin City, Edo State, Nigeriae0
Verbatim
e0“there is an existence of the genetic diversity in a landscape of grass species (Digitaria horizontalis) found in different built environment in Benin City, Edo State, Nigeria.”