Claim · model-written summary
Spruces from Cerro Mohinora, Chihuahua, were clearly P. mexicana and not hybrids of P. chihuahuana and P. pungens.
PiceaNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spruces from Cerro Mohinora, Chihuahua, were clearly P. mexicana, not phantom hybrids of P. chihuahuana and P. pungens”
Title
Relationships among the Spruces (Picea, Pinaceae) of Southwestern
F. Thomas Ledig; Paul D. Hodgskiss; Konstantin V. K Rutovskii; et al. 2004
Other claims from this paper (13)
- Observation Isozyme loci clearly separated each of the six spruce taxa.
- Observation Neighbor-Joining and UPGMA analyses of Nei's genetic distance grouped all populations within each taxon into their own clusters.
- Observation Spruces from Flys Peak, Arizona, joined a P. engelmannii cluster and were not a bridge to P. mexicana.
- Observation P. chihuahuana and P. martinezii were separated as distinct species.
- Observation P. chihuahuana and P. martinezii formed a sister-species group.
- Observation Picea engelmannii and P. mexicana formed a separate cluster.
- Association The genetic distance between Picea engelmannii and P. mexicana was similar to values associated with closely related species.
- Association The genetic distance between Picea engelmannii and P. mexicana was greater than distances typical of subspecies or varieties in conifers.
- Observation Picea pungens was clearly distinguished from P. engelmannii, although the two are frequently misidentified.
- Observation Picea pungens sometimes joined a P. chihuahuana-martinezii group and sometimes a P. engelmannii-mexicana group, depending on analysis.
- Observation Picea breweriana was well isolated from all other taxa.
- Observation DNA and isozyme phylogenies agreed with results from crossability studies.
- Observation DNA and isozyme phylogenies contradicted intrageneric relationships constructed largely on cone morphology.