VARIACIÓN DE ALCANOS FOLIARES EN ALGUNAS ESPECIES ARGENTINAS DE SOLANUM (SOLANACEAE)

The alkane composition of the epicuticular wax of leaves obtained from 21 populations of Solanum growing in Argentine were investigated and compared. S. glaucophyllum has high levels of heptacosane (22,50%), nonacosane (12,70%) and pentacosane (12,00%). The tritriacontane is the dominating alkane (>39,50%) in S. elaeagnifolium, S. juvenale and S. euacanthum, whereas the hentriacontane is predominat (>26,30%) in S. stuckertii and S. adelphum. The usefulness as taxonomic markers is briefly discussed.Se estudió la composición de los alcanos foliares obtenidos de las ceras epicuticulares de 21 poblaciones de Solanum que crecen en Argentina. S. glaucophyllum presenta un elevado contendido de heptacosano (22,50%), nonacosano (12,70%) Yde pentacosano (12,00%). El tritriacontano es el alcano dominante (>39,50%) en S. elaeagnifolium, S.juvenaley S. euacanthum, mientras que el hentriacontano es el predominante (>26,30%) en S. stuckertii y S. adelphum. Se discutió la utilización de los alcanos como posibles indicadores taxonómicos

Results of the GEP-ISFG collaborative study on an X-STR Decaplex

A collaborative work was carried out by the Spanish and Portuguese ISFG Working Group with a PCR multiplex for X chromosome STRs. Markers were selected among those described as polymorphic in humans and that have been used by some laboratories in forensics. Primers and various technical methods were investigated with the aim of optimizing a multiplex for the 10 selected X-STRs. Primer mix stock solutions were sent to the laboratories that were asked to analyse two female bloodstains, taking as reference the genetic profiles from 9947A, 9948 and NA3657 samples. In this work, we report the results obtained by 30 GEP-ISFG laboratories, using this Decaplex, as well as alternative technical conditions that also produced good results. © 2008 Elsevier B.V. All rights reserved