This study, based on inter-simple sequence repeats in 14 populations of Linaria capraria, shows that genetic diversity at the species level is 0.21 and represents 58% of total variance, whereas the level of intrapopulational genetic diversity is 0.07 and represents 42% of total variance. Gene flow is absent between populations from the same island. On the basis of analysis of molecular variance, three centers of genetic diversity were found: Elba and Pianosa, Montecristo, and Capraia; these correspond to the group of islands that remained isolated during theWu¨ rm marine regression. A mean proportion of species level diversity resides among populations, so we hypothesize that the species has a mixed reproductive system that lies somewhere between obligate outcrossing and obligate selfing. The most genetically diverse populations live in natural and well-isolated rocky habitats that seem to have no particular intervention requirements for conservation but the entire system of populations of this endemic species should be preserved.

Genetic structure of Linaria capraria Mill. (Plantaginaceae): and endemic species of the Tuscan Archipleago (central Mediterranean) / Coppi A.; Guidi T.; Viciani D.; Foggi B.. - In: PLANT BIOSYSTEMS. - ISSN 1724-5575. - STAMPA. - 148 (2):(2014), pp. 249-258. [10.1080/11263504.2012.762948]

Genetic structure of Linaria capraria Mill. (Plantaginaceae): and endemic species of the Tuscan Archipleago (central Mediterranean).

COPPI, ANDREA;VICIANI, DANIELE;FOGGI, BRUNO
2014

Abstract

This study, based on inter-simple sequence repeats in 14 populations of Linaria capraria, shows that genetic diversity at the species level is 0.21 and represents 58% of total variance, whereas the level of intrapopulational genetic diversity is 0.07 and represents 42% of total variance. Gene flow is absent between populations from the same island. On the basis of analysis of molecular variance, three centers of genetic diversity were found: Elba and Pianosa, Montecristo, and Capraia; these correspond to the group of islands that remained isolated during theWu¨ rm marine regression. A mean proportion of species level diversity resides among populations, so we hypothesize that the species has a mixed reproductive system that lies somewhere between obligate outcrossing and obligate selfing. The most genetically diverse populations live in natural and well-isolated rocky habitats that seem to have no particular intervention requirements for conservation but the entire system of populations of this endemic species should be preserved.
2014
148 (2)
249
258
Coppi A.; Guidi T.; Viciani D.; Foggi B.
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/789726
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