The correlation of phylogenetics, elevation and ploidy on the incidence of apomixis in Asteraceae in the European AlpsAsexual reproduction has often been regarded as an evolutionary dead end, but asexual lineages (most notably those that are apomictic) are present in several angiosperm families and often comprise a large number of taxa, both widespread and endemic. Investigating correlations between genetic, environmental and taxonomic factors and the incidence of...
Pegoraro, Luca ; Baker, Ellen C ; Aeschimann, David ; Balant, Manica ; Douzet, Rolland …
Differential Interpretation of Mountain Temperatures by Endospermic Seeds of Three Endemic Species Impacts the Timing of In Situ GerminationPredicting seed germination in the field is a critical part of anticipating the impact of climate change on the timing of wild species regeneration. We combined thermal time and soil heat sum models of seed germination for three endemic Mediterranean mountain species with endospermic seeds and morphophysiological dormancy: Aquilegia barbaricina,...
Porceddu, Marco ; Pritchard, Hugh W. ; Mattana, Efisio ; Bacchetta, Gianluigi
Shift in flowering time allows diploid and autotetraploid Anacamptis pyramidalis (Orchidaceae) to coexist by reducing competition for pollinatorsHow autopolyploids establish when competing with diploid progenitors is still poorly understood. Here, we investigate the effects of morphological and phenological divergence on the reproductive success of co-occurring diploid and autotetraploid individuals of Anacamptis pyramidalis to disentangle the mechanisms allowing their c-oexistence. We estimated reproductive success in terms of absolute...
Pegoraro, Luca ; De Vos, Jurriaan M ; Cozzolino, Salvatore ; Scopece, Giovanni