<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Ramírez-Valiente, J a.</style></author><author><style face="normal" font="default" size="100%">Alia, R</style></author><author><style face="normal" font="default" size="100%">Aranda, I</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Geographical variation in growth form traits in Quercus suber and its relation to population evolutionary history</style></title><secondary-title><style face="normal" font="default" size="100%">Evolutionary Ecology</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Evolutionary history</style></keyword><keyword><style  face="normal" font="default" size="100%">Growth adaptation</style></keyword><keyword><style  face="normal" font="default" size="100%">plant architecture</style></keyword><keyword><style  face="normal" font="default" size="100%">Population ecology</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2013</style></year></dates><volume><style face="normal" font="default" size="100%">28</style></volume><pages><style face="normal" font="default" size="100%">55-68</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Differential selection pressures caused by environmental disparities lead to populations to become differentiated as they adapt to local environments. In addition, natural selection during the species past can contribute to the observed differentiation. In this study, we examine the geographic variation in a set of four traits related to growth and plant architecture in cork oak (Quercus suber) and investigate to what extent this variation is the result of the effects of ongoing evolution in current environments and the past evolutionary history of the species. Cork oak saplings at the common garden trial exhibited differences in plant architecture associated to cpDNA lineage. Eastern lineages, exhibited the lowest apical dominance and highest branchiness, consistent with the analyses in other cork oak trials. In contrast, patterns linked to the evolutionary past were less evident in height and diameter. These results suggest that selective pressures after cpDNA divergence can have blurred patterns in some traits closely related to fitness, while conserving the past evolutionary imprints in plant architectural traits. Introgressed populations did not show significant differentiation in architecture, which suggests that allele exchanges via hybridization have had a limited effect on population differentiation in cork oak. Finally, populations within lineages also showed differences in growth and architecture. Correla- tion between population architecture and temperature patterns were observed indicating that environmental factors such as climate also could result crucial in the evolution of plant architecture of cork oak within lineages</style></abstract></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Toumi, Lamjed</style></author><author><style face="normal" font="default" size="100%">Lumaret, Roselyne</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Genetic variation and evolutionary history of holly oak: a circum-Mediterranean species-complex [Quercus coccifera L./Q. calliprinos (Webb) Holmboe, Fagaceae]</style></title><secondary-title><style face="normal" font="default" size="100%">Plant Systematics and Evolution</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Allozyme variation</style></keyword><keyword><style  face="normal" font="default" size="100%">Evergreen Mediterranean oaks</style></keyword><keyword><style  face="normal" font="default" size="100%">Evolutionary history</style></keyword><keyword><style  face="normal" font="default" size="100%">Morphotype variation</style></keyword><keyword><style  face="normal" font="default" size="100%">Quercus coccifera L./Q. calliprinos (Webb) Holmboe</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2010///</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.springerlink.com/index/10.1007/s00606-010-0358-2</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">290</style></volume><pages><style face="normal" font="default" size="100%">159 - 171</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Holly oak is the only evergreen oak possessing a circum-Mediterranean range; it has two predominant morphological forms, calliprinos and coccifera, described in the eastern and western Mediterranean Basin respectively. The concordance of allozyme and morphotype variation was analysed in the whole holly oak range, and the most plausible historical events responsible for the current geographic pattern of genetic variation were investigated. Individuals from 24 populations were scored for allozyme variation at seven polymorphic loci. Multilocus genotypes were analysed by using a correspondence analysis (CA) and a Bayesian clustering approach. The relative positions of the populations were obtained from multi-dimensional scaling coupled with UPGMA treatment. A continuous genotype distribution was observed in the CA, and two groups were identiﬁed using the Bayesian approach. With a 0.95 threshold, 66 and 69% of the individuals showing the calliprinos and the coccifera morphotypes respectively were assigned to the corresponding genetic groups, which differed by private alleles. As compared to coccifera, the genetic group calliprinos was characterized by higher allelic richness and a strong geographical genetic structure. In agreement with fossil records, the most parsimonious explanation for lack of geographical structure in coccifera is a substantial regression of holly oak in the western Mediterranean Basin during the glaciations and a fast westward post-glacial expansion of coccifera populations, probably from Greece. Two population groups were obtained from the scaling/ UPGMA treatment. One included all of the calliprinos populations and a Greek coccifera population, suggesting that the two morphotypes are closely related genetically and constitute two components of the same species.</style></abstract><issue><style face="normal" font="default" size="100%">1-4</style></issue></record></records></xml>