• Publications
  • Influence
Iridaceae ‘Out of Australasia’? Phylogeny, Biogeography, and Divergence Time Based on Plastid DNA Sequences
TLDR
Application of molecular clock techniques to the phylogeny indicates that the Iridaceae differentiated in the late Cretaceous and diverged from the next most closely related family, Doryanthaceae circa 82 mya, thus during the Campanian. Expand
Paraphyly in Tribe Onagreae: Insights into Phylogenetic Relationships of Onagraceae Based on Nuclear and Chloroplast Sequence Data
Abstract Onagraceae are a family of 17 genera in seven tribes, with the majority of species in tribes Onagreae and Epilobieae. Despite the species-richness of these two tribes, to date noExpand
Advances in the phylogeny of Helvella (Fungi: Ascomycota), inferred from nuclear ribosomal LSU sequences and morphological data
TLDR
Phylogenetic relationships in the genus Helvella were investigated using both LSU rDNA sequences and morphological features, resulting in better-supported clades. Expand
Assessing Genetic Diversity in Mexican Husk Tomato Species
TLDR
ISSR markers are useful in estimating genetic relationships in Physalis and grouped accessions of the same species together and clustered together Physalis species of similar morphological traits to confirm the ISSR value in taxonomic discrimination. Expand
Is There any Genetic Variation among Native Mexican and Argentinian Populations of Dalbulus maidis (Hemiptera: Cicadellidae)?
TLDR
Investigating possible genetic variability among D. maidis populations collected in Mexico on maize and maize relatives (annual and perennial teosintes) and on maize in Argentina found no genetic variation and low genetic variation was found in the mitochondrial region. Expand
Phylogenetics of the "Tiger-flower" Group (Tigridieae: Iridaceae): Molecular and Morphological Evidence
TLDR
Cl cladistic analysis of the combined data sets supported the recurrent dispersal of Cipurinae from South to North America and a South American origin of the Mexican-Guatemalan subtribe Tigridiinae. Expand
SUBSPECIES BOUNDARIES OF THE WILD POTATOES SOLANUM BULBOCASTANUM AND S. CARDIOPHYLLUM BASED ON MORPHOLOGICAL AND NUCLEAR RFLP DATA
TLDR
The nuclear DNA and morphological data showed S. ehrenbergii to be slightly distinguishable from the other subspecies of S. cardiophyllum, and do not support the distinction of subspecies within either species, adding to a growing body of evidence that there are too many wild potato taxa recognized. Expand
Wild potato (Solanum sect.Petota) germplasm collecting expedition to Mexico in 1993, with special reference toSolanum bulbocastanum Dunal andS. cardiophyllum Lindley
TLDR
A joint Mexico/United States expedition collected wild potato germplasm in Mexico between August 1-31, 1993 to expand germplasma and herbarium collections of S. bulbocastanum and S. cardiophyllum. Expand
Números cromosómicos para tres especies de Cosmos sección Discopoda (Asteraceae, Coreopsideae), con notas citogeográficas
TLDR
A correlation between the ploidsy levels and geographical ranges of the species of Cosmos section Discopoda does not seem apparent, but there does seem to be an increase in ploidy levels from south to north, with a concentration of polyploids in the northern area of the Sierra Madre Occidental. Expand
...
1
2
3
4
5
...