#TZR : Frais de déplacement et ISSR : connaître pour faire respecter ses droits !
La mission de TZR ouvre des droits quant au remboursement des frais de déplacements ou au bénéfice de l'Indemnité de sujétions spéciales de remplacement ( #ISSR ).
Connaître pour faire respecter ses droits !
https://rennes.snes.edu/frais-de-deplacement-et-issr-vos-droits.html
Abstract Two species of the genus Galinsoga, G. parviflora Cav. and G. quadriradiata Ruiz and Pav., are among the most successful invasive plants causing significant damage to natural- and agroecosystems. Their natural distribution range extends from North to South America, and the adventitious part of the range includes all continents except Antarctica. Despite the practical importance of G. parviflora and G. quadriradiata, the genetic diversity of European populations of these species remains unexplored. In this study, ISSR markers were used to study Ukrainian populations of G. parviflora and G. quadriradiata and compared them with plants from Poland, Lithuania, and Portugal. The results obtained indicate the low genetic diversity (Shannon’s index I = 0.124) of G. quadriradiata populations, which is probably due to the small size of the original population introduced to the Old World from America. In contrast, the genetic diversity in G. parviflora populations is significantly higher (I = 0.254). Some genotypes of G. parviflora have a wide geographical distribution and, at the same time, different genotypes occur in the same area. The data obtained are in good agreement with the hypothesis that the main way of the invasion of Galinsoga species in the Old World was escape from botanical gardens. Among the samples examined, several forms of hybrid nature were identified, probably originating from hybrids between G. parviflora and G. quadriradiata, followed by subsequent backcrossing with one of the parent species.
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SNES-FSU Bretagne
Cytology and Genetics
UjuBib