Genetic divergence among species of the section Strombocarpa, genusProsopis (Leguminosae)

Autor: Beatriz O. Saidman, Mariana I. Pocovi, Noemi Acreche, Juan C. Vilardi
Rok vydání: 1996
Předmět:
Zdroj: Journal of Genetics. 75:139-149
ISSN: 0973-7731
0022-1333
DOI: 10.1007/bf02931757
Popis: We studied degree of variability and relationships among populations belonging to five species of the section Strombocarpa of the family Leguminosae, namelyProsopis ferox, P. torquata, P. pubescens, P. strombulifera andP. reptans, by isozyme electrophoresis. The genetic similarity betweenP. reptans andP. strombulifera is high enough for the two to be considered subspecies or geographic races ofP. strombulifera instead of good taxonomic species. As expected these species cluster withP. pubescens, all belonging to series Strombocarpae. This group is different isoenzymatically from the remaining species,P. torquata andP. ferox. Comparison of our results with those obtained earlier for species of the section Algarobia showed that genetic variability in the section Strombocarpa is lower than in the section Algarobia, while the species divergence is much higher. These results suggest different adaptive strategies between these sections.
Databáze: OpenAIRE
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