Paper · 1987 · Journal of Heredity

Meiotic analysis of 14 Cuphea species and two interspecific hybrids

A. C. Gathman; D. T. Ray

5
claims
6
verbatim quotes
11
citations
3
research areas
—
Not open access

Abstract

Melotic anlaysis of 14 species in the genus Cuphea confirmed haploid chromosome numbers from 6 to 22. All accessions within a species were found to have the same number of chromosomes with the exception of C. leptopoda accession 264, which had n = 8, while the other three accessions were n = 10. The probability of chlasma formation between a pair of chromosome arms was calculated for each accession and values ranged from 0.565 to 0.905. An Interspecific hybrid between two diplold Cuphea species was formed and the melotic pairing data used to establish a protocol for estimating genomic affinity in Cuphea. Melotic analysis of another Interspecific hybrid between the autotetra-plold, C. caesarlata, and its diplold progenitor, C. llavea, showed that the genomes have differentiated very little and that diplodization in C. caesarlata must have occurred quite rapidly.

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Claims 5

Observationobservedoriginal resultmeasured

Claim · model-written summary

Cuphea species had haploid chromosome numbers from 6 to 22.

Taxon
CupheaCupheae0
Outcome
haploid chromosome numberse0
Value
6 to 22e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cuphea
Cuphea · Taxon · picture of the genus (one of its species)Stan Shebs · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Melotic anlaysis of 14 species in the genus Cuphea confirmed haploid chromosome numbers from 6 to 22.”

✓ located verbatim in the source · abstract, characters 0–101 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

C. leptopoda accession 264 had n = 8 whereas the other three accessions had n = 10.

Taxon
C. leptopodaCuphea leptopodae0
Material
accession 264e0
Outcome
number of chromosomese0
Value
n = 8e0
Qualifier
n = 10e0
Comparator
the other three accessionse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cuphea leptopoda
Cuphea leptopoda · TaxonNeptalí Ramírez Marcial · CC BY 4.0 · iNaturalist ↗

Verbatim

e0

“All accessions within a species were found to have the same number of chromosomes with the exception of C. leptopoda accession 264, which had n = 8, while the other three accessions were n = 10.”

✓ located verbatim in the source · abstract, characters 102–296 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Calculated chiasma formation probabilities ranged from 0.565 to 0.905 across accessions.

Taxon
CupheaCupheat0
Outcome
probability of chlasma formatione0
Value
0.565 to 0.905e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cuphea
Cuphea · Taxon · picture of the genus (one of its species)Stan Shebs · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The probability of chlasma formation between a pair of chromosome arms was calculated for each accession and values ranged from 0.565 to 0.905.”

✓ located verbatim in the source · abstract, characters 297–440 · show in text ↑
t0

“Cuphea species”

✓ located verbatim in the source · title, characters 23–37 · show in text ↑
Method / resourceobservedoriginal resultmeasured

Claim · model-written summary

Meiotic pairing in a diploid interspecific Cuphea hybrid established a genomic affinity estimation protocol.

Taxon
CupheaCupheae0
Material
Interspecific hybride0
Outcome
protocol for estimating genomic affinitye0

Not reportedValue

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cuphea
Cuphea · Taxon · picture of the genus (one of its species)Stan Shebs · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“An Interspecific hybrid between two diplold Cuphea species was formed and the melotic pairing data used to establish a protocol for estimating genomic affinity in Cuphea.”

✓ located verbatim in the source · abstract, characters 441–611 · show in text ↑
Observationauthor interpretationoriginal resultmeasured

Claim · model-written summary

Meiotic pairing of C. caesarlata and C. llavea indicated little genomic differentiation and rapid diploidization in C. caesarlata.

Taxon
C. caesarlatae0
Outcome
genomes have differentiated very littlee0
Qualifier
diplodization in C. caesarlata must have occurred quite rapidlye0
Comparator
C. llaveae0

Verbatim

e0

“Melotic analysis of another Interspecific hybrid between the autotetra-plold, C. caesarlata, and its diplold progenitor, C. llavea, showed that the genomes have differentiated very little and that diplodization in C. caesarlata must have occurred quite rapidly.”

✓ located verbatim in the source · abstract, characters 612–873 · show in text ↑