Abstracts, XIV OPTIMA Meeting, Palermo (Italy) , 9-15

More documents

Recommendations

Info

XIV OPTIMA Meeting, Palermo (Italy), 9-15 September 2013 Taxonomic and phylogeographic study of the Silene italica group (Caryophyllaceae) in the Eastern Mediterranean basin DU PASQUIER P.-E., NACIRI Y., JEANMONOD D. Conservatoire et Jardin botaniques de Genève, Switzerland. E-mail: Pierre-Emmanuel.Du-Pasquier@ville-ge.ch A PhD thesis is presently conducted on the taxonomic and phylogeographic study of the Silene italica group in the Eastern Mediterranean Basin. This work will complete what has already been done in our lab on the Western Mediterranean species. The Silene italica group comprises about 30 species in the Mediterranean Basin, 14 occurring in the eastern part among which 12 are endemic species. The main hotspots of diversity for the latter are Greece and Turkey with seven species in Greece (S. sieberi, S. cythnia, S. goulimyi, S. spinescens, S. damboldtiana, S. niederi, S. congesta) and three in Turkey (S. splendens, S. phrygia, S. ispartensis). The two remaining species occur in Cyprus (S. galataea) and Lebanon (S. astartes). Two species have larger distributions: S. italica s.l. is found from the Pyrenees to Iran and S. gigantea s.l. occurs in all the Balkan Peninsula. We characterised all the species of the Eastern Mediterranean basin using two chloroplast markers (psbA-trnH and trnS-trnG) and many accessions per taxa. The molecular results show that species from the Eastern and Western Mediterranean Basin form two distinct entities indicating the occurrence of two independent speciation events within the group. Moreover every endemic species of the Eastern Basin displays specific chloroplast haplotypes. The haplotype network also shows that two species have a central position between the eastern and western entities: Silene nemoralis occurring in Central Europe and S. damboldtiana, a poorly known endemic species from the northern Greek mountains. This could indicate that they played a leading role in the diversification process. From a phylogeographic point of view, species radiation and their extant distribution seem to be related to paleogeographic events that occurred from the Middle Miocene until the end of the glaciation cycles, especially in the Aegean archipelago of Greece. Plausible speciation scenarios taking into account the paleogeographic history of the region are discussed. 115
XIV OPTIMA Meeting, Palermo (Italy), 9-15 September 2013 Microhabitat selection of Salicornia fretagii (Chenopodiaceae) and Salicornia perennans DUZGUN N., YAPRAK A. E., TUG G.N. Ankara University, Science Faculty, Department of Biology, Ankara, Turkey. E-mail: tug@science.ankara edu.tr Salicornia freitagii Yaprak & Yurdakulol and S. perennans Willd. (Chenopodiaceae) are annual halophytic plants with dimorphic seeds. Although they occupy similar habitats around saline lakes, they form pure communities; S. freitagii at more saline lower marsh and S. perennans at less saline upper marsh. It was aimed to find out the influence of germination characteristics on microhabitat selection. The optimum germination conditions were found as 12 hours day/night photoperiod with 9˚C night and 22 ˚C day temperatures. The lateral seeds of both species were dormant with less than 40% germination ratio and for breaking down of dormancy cold treatment were found affective. Although they have tolerance for high salinity in their natural habitat, over 200 mM NaCl there was a great decrease in germination ratio. TTC test was applied to the ungerminated seeds after recovery. The dead seed ratio was high for both of the species. The influences of different NaCl concentrations of seed germination were analyzed with SPSS and one-way ANOVA. Increase in NaCl concentration decreased the germination rate and the highest germination ratio for all the trials were found at lateral seeds dormancy of which were broken with cold treatment. There was a statistically important difference between the germination characteristics of the seeds at 200 mM and 400 mM NaCl (p
Page 2 and 3:
Abstracts Lectures Communicaons Pos
Page 4:
Organizing Commitee Francesco M. Ra
Page 7 and 8:
S. Crema & G. Cristofolini: Phyloge
Page 9 and 10:
G. Bedini & L. Peruzzi: A compariso
Page 12 and 13:
XIV OPTIMA Meeting, Palermo (Italy)
Page 14 and 15:
Page 16 and 17:
Page 18 and 19:
Page 20 and 21:
Page 22 and 23:
Page 24 and 25:
Page 26 and 27:
Page 28 and 29:
Page 30 and 31:
Page 32 and 33:
Page 34 and 35:
Page 36 and 37:
Page 38 and 39:
Page 40 and 41:
Page 42 and 43:
Page 44 and 45:
Page 46 and 47:
Page 48 and 49:
Page 50 and 51:
Page 52 and 53:
Page 54 and 55:
Page 56 and 57:
Page 58 and 59:
Page 60 and 61:
Page 62 and 63:
Page 64 and 65:
Page 66 and 67: XIV OPTIMA Meeting, Palermo (Italy)
Page 92: XIV OPTIMA Meeting, Palermo (Italy)
Page 160 and 161: Laguna E. . . . . . . . . . . . . .
Page 162: XIV OPTIMA Meeting, Palermo (Italy)
Page 166:
Page 169:
Printed in August 2013 by Tipolitog
Page 172 and 173:
Page 174 and 175:
Page 176 and 177:
show all

Abstracts, XIV OPTIMA Meeting, Palermo (Italy) , 9-15

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?