By organism › Green plants › Menyanthaceae › Nymphoides coreana

Observationobservedoriginal resultmeasured

Claim · model-written summary

N. coreana was tetraploid, with 2n = 36.

Taxon: N. coreanaNymphoides coreanae0
Outcome: tetraploide0
Value: 2n = 36e0

Verbatim

e0
“All four species exhibit exclusively metacentric chromosomes, with M. trifoliata and N. peltata being hexaploid (2n = 54), N. coreana tetraploid (2n = 36), and N. indica diploid (2n = 18).”
✓ located verbatim in the source · abstract, characters 353–541

Title

Karyotype analysis and chromosome evolution in Menyanthaceae using FISH

Hye-rin Kim; Kweon Heo Caryologia 2025. doi:10.36253/caryologia-3431

Other claims from this paper (12)

Observation All four Menyanthaceae species had metacentric chromosomes.
Observation M. trifoliata was hexaploid, with 2n = 54.
Observation N. peltata was hexaploid, with 2n = 54.
Observation N. indica was diploid, with 2n = 18.
Observation Species had one to four 45S rDNA loci.
Observation Species had one to three 5S rDNA loci.
Association rDNA site number did not correlate directly with ploidy.
Observation The karyotypes suggest a conserved base chromosome number of x = 9.
Observation The species have largely symmetrical karyotypes.
Observation M. trifoliata has fewer rDNA loci than expected for a hexaploid.
Mechanism The low rDNA locus number in M. trifoliata indicates rearrangements and locus loss through diploidization.
Observation M. trifoliata has an evolutionarily stable genome structure despite polyploidy.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Nymphoides coreana was endangered in the surveyed area.

Taxon: Nymphoides coreanaNymphoides coreanae0
Outcome: endangered species (EN)e0
Value: onee0

Not reportedDirection

Verbatim

e0
“one endangered species (EN), Nymphoides coreana”
✓ located verbatim in the source · abstract, characters 889–936

Title

Floristic study of Imja-do (Isl.)

Haeng Hwa Hong; Hyun Deok Son; Seok Young In; et al. Korean Journal of Plant Taxonomy 2011. doi:10.11110/kjpt.2011.41.4.429

Other claims from this paper (17)

Observation The island flora comprised 526 taxa.
Observation The flora comprised 112 families.
Observation The flora comprised 331 genera.
Observation The flora comprised 463 species.
Observation The flora comprised one subspecies.
Observation The flora comprised 60 varieties.
Observation The flora comprised two forms.
Observation There were 78 floristic regional indicator taxa.
Observation Millettia japonica was a level II endangered species.
Observation Four indicator taxa were at level V.
Observation Two indicator taxa were at level IV.
Observation Fourteen indicator taxa were at level III.
Observation Three indicator taxa were at level II.
Observation Fifty-five indicator taxa were at level I.
Observation Five species including Ilex cornuta were vulnerable.
Observation Three species including Utricula riaracemosa were near threatened.
Observation The flora was classified into four geographical origin types.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Percentage of polymorphic loci, mean and effective numbers of alleles varied little among populations

Taxon: Nymphoides coreanaNymphoides coreanae0
Outcome: The percentage of polymorphic loci, the mean number of alleles per locus, and the effective number of alleles per locuse1
Direction: varied littlee1
Setting: southwestern Japane0

Verbatim

e1
“The percentage of polymorphic loci, the mean number of alleles per locus, and the effective number of alleles per locus varied little among populations”
✓ located verbatim in the source · abstract, characters 105–256

e0
“We surveyed allozyme variations among ten Nymphoides coreana populations in southwestern Japan”
✓ located verbatim in the source · abstract, characters 9–103

Title

Genetic variations in the endangered aquatic plant Nymphoides coreana (Menyanthaceae) in south‐western Japan

YUKI SHIBAYAMA; YASURO KADONO Plant Species Biology 2008. doi:10.1111/j.1442-1984.2008.00218.x

Other claims from this paper (6)

Observationobservedoriginal resultmeasured

Claim · model-written summary

Observed and expected heterozygosity were low in Nymphoides coreana populations

Taxon: Nymphoides coreanaNymphoides coreanae0
Outcome: The observed heterozygosity and expected heterozygositye2
Direction: lowe2

Verbatim

e2
“The observed heterozygosity and expected heterozygosity were low”
✓ located verbatim in the source · abstract, characters 258–322

e0
“We surveyed allozyme variations among ten Nymphoides coreana populations in southwestern Japan”
✓ located verbatim in the source · abstract, characters 9–103

Title

Genetic variations in the endangered aquatic plant Nymphoides coreana (Menyanthaceae) in south‐western Japan

YUKI SHIBAYAMA; YASURO KADONO Plant Species Biology 2008. doi:10.1111/j.1442-1984.2008.00218.x

Other claims from this paper (6)

Observationobservedoriginal resultmeasured

Claim · model-written summary

Gene diversity of the species within populations (Hs) was low

Taxon: Nymphoides coreanaNymphoides coreanae0
Outcome: proportion of gene diversity of the species within populationse3
Direction: lowe3

Verbatim

e3
“The proportion of gene diversity of the species within populations ( H s ) was also low”
✓ located verbatim in the source · abstract, characters 324–411

e0
“We surveyed allozyme variations among ten Nymphoides coreana populations in southwestern Japan”
✓ located verbatim in the source · abstract, characters 9–103

Title

Genetic variations in the endangered aquatic plant Nymphoides coreana (Menyanthaceae) in south‐western Japan

YUKI SHIBAYAMA; YASURO KADONO Plant Species Biology 2008. doi:10.1111/j.1442-1984.2008.00218.x

Other claims from this paper (6)

Observationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Inbreeding coefficient within each local population was significantly larger than expected

Taxon: Nymphoides coreanaNymphoides coreanae0
Outcome: inbreeding coefficient within a populatione4
Direction: largere4
Comparator: expectede4

Verbatim

e4
“The inbreeding coefficient within a population, F is , was significantly larger than expected in each local population”
✓ located verbatim in the source · abstract, characters 495–613

e0
“We surveyed allozyme variations among ten Nymphoides coreana populations in southwestern Japan”
✓ located verbatim in the source · abstract, characters 9–103

Title

Genetic variations in the endangered aquatic plant Nymphoides coreana (Menyanthaceae) in south‐western Japan

YUKI SHIBAYAMA; YASURO KADONO Plant Species Biology 2008. doi:10.1111/j.1442-1984.2008.00218.x

Other claims from this paper (6)

Observationobservedoriginal resultmeasured

Claim · model-written summary

Almost all genetic variation in Nymphoides coreana occurred among populations

Taxon: Nymphoides coreanaNymphoides coreanae0
Outcome: variationse5
Direction: occurred among populationse5

Verbatim

e5
“A comparison between H s and the proportional gene diversity of the species among populations ( D st ) showed that almost all variations occurred among populations”
✓ located verbatim in the source · abstract, characters 615–778

e0
“We surveyed allozyme variations among ten Nymphoides coreana populations in southwestern Japan”
✓ located verbatim in the source · abstract, characters 9–103

Title

Genetic variations in the endangered aquatic plant Nymphoides coreana (Menyanthaceae) in south‐western Japan

YUKI SHIBAYAMA; YASURO KADONO Plant Species Biology 2008. doi:10.1111/j.1442-1984.2008.00218.x

Other claims from this paper (6)

Observationobservedoriginal resultmeasured

Claim · model-written summary

Gene diversity between populations relative to the combined populations (Gst) was high, indicating large genetic differentiation

Taxon: Nymphoides coreanaNymphoides coreanae0
Outcome: gene diversity between populations relative to the combined populationse6
Direction: highe6
Qualifier: Large genetic differentiatione6

Verbatim

e6
“Large genetic differentiation was also supported by the high value of gene diversity between populations relative to the combined populations ( G st )”
✓ located verbatim in the source · abstract, characters 780–930

e0
“We surveyed allozyme variations among ten Nymphoides coreana populations in southwestern Japan”
✓ located verbatim in the source · abstract, characters 9–103

Title

Genetic variations in the endangered aquatic plant Nymphoides coreana (Menyanthaceae) in south‐western Japan

YUKI SHIBAYAMA; YASURO KADONO Plant Species Biology 2008. doi:10.1111/j.1442-1984.2008.00218.x

Other claims from this paper (6)

Mechanismauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors consider Nymphoides coreana a selfing species, which they link to distinct genetic variation among populations

Taxon: Nymphoides coreanaNymphoides coreanae0
Outcome: genetic variations among the populationse7
Qualifier: a selfing speciese7

Verbatim

e7
“Nymphoides coreana is considered to be a selfing species, and genetic variations among the populations were shown to be distinct”
✓ located verbatim in the source · abstract, characters 932–1060

e0
“We surveyed allozyme variations among ten Nymphoides coreana populations in southwestern Japan”
✓ located verbatim in the source · abstract, characters 9–103

Title

Genetic variations in the endangered aquatic plant Nymphoides coreana (Menyanthaceae) in south‐western Japan

YUKI SHIBAYAMA; YASURO KADONO Plant Species Biology 2008. doi:10.1111/j.1442-1984.2008.00218.x

Other claims from this paper (6)

Nymphoides coreana 9 claims

9 claims