Claim · model-written summary
Arachis porphyrocalyx has 2n=18 chromosomes, the first 2n=18 count for an Arachis species outside section Arachis.
- Taxon
- A porphyrocaiyxe7
- Outcome
- chromosome numbere1
- Value
- 2n=18e7
- Qualifier
- first count of 2n=18 chromosomes for an Arachis species outside section Arachise0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirection
Verbatim
e1“The chromosome number was determined in eleven recently-described species of Arachis belonging to five different taxonomie sections”
e7“The new species of section Erectoides, A porphyrocaiyx, shows 2n=18”
e0“This is the first count of 2n=18 chromosomes for an Arachis species outside section Arachis”
t0“OF ELEVEN SPECIES OF ARACHIS (LEGUMINOSAE)”
Title
OF ELEVEN SPECIES OF ARACHIS (LEGUMINOSAE)
Andréa Del Pilar De Souza; José Francisco Montenegro Valls 2005
Other claims from this paper (12)
- Observation Arachis Gregoryi has 2n=20 chromosomes and lacks the small A pair.
- Observation Arachis Krapovickasii has 2n=20 chromosomes and lacks the small A pair.
- Observation Arachis linearifolia has 2n=20 chromosomes, including the small A pair.
- Observation Arachis Schininii has 2n=20 chromosomes, including the small A pair.
- Observation Arachis Schininii shows many morphological differences from A. Hoehnei and is considered a new species.
- Observation Arachis submarginata has 2n=20 chromosomes.
- Observation Arachis Pflugeae has 2n=20 chromosomes.
- Observation Arachis Hassleri has 2n=20 chromosomes.
- Observation Arachis seridoensis has 2n=20 chromosomes.
- Observation Arachis interrupta has 2n=20 chromosomes.
- Observation Arachis nitida is tetraploid with 2n=40 chromosomes and is morphologically distinct from the other tetraploids in its section.
- Mechanism The origin of the 2n=18 chromosomes is probably not associated with the origin of the 18 chromosomes in section Arachis species.