annals-of-botany
Asexual reproduction is relatively common in higher plants and comprises vegetative reproduction or clonal reproduction through seeds (apomixis or agamospermy). Apomixis is found in less than
annals-of-botany
Hybrid zones, or zones of genetic admixture of different intraspecific cytotypes, provide clues to evolutionary transitions and the mechanisms of polyploid speciation. Čertner et al. present
annals-of-botany
The Mediterranean region has cradled the evolution of many European plant taxa, including grass genera. Chumová et al. use a multidisciplinary approach combining sequence data, rDNA
annals-of-botany
Allopolyploidy combined with apomixis is a partnership that generates novel species in many plant taxa, including the genus Sorbus. Uhrinová et al. use chloroplast and nuclear
annals-of-botany
Landrein et al. explore the genetic and morphological consequences of natural selection and selective breeding in the genus Abelia (Caprifoliaceae). The genus comprises ornamental shrubs, endemic
annals-of-botany
Unravelling relationships within Hordeum, one of the largest genera of the tribe Triticeae (Hordeae), is difficult, as many taxa, including most of the polyploids, are of
annals-of-botany
Distribution of polyploidy along a relatively steep Andean elevation gradient is studied using the genus Fosterella (Bromeliaceae) as a model system. Paule et al. observed an
annals-of-botany
Allopolyploids exhibit both different levels and patterns of genetic variation than are typical of diploids. Hitherto, little attention has been given to the apportioning of allelic
annals-of-botany
A propensity to form polyploid hybrids is a peculiar feature of roses. Herklotz and Ritz investigate the population genetics of forty five mixed stands of dog
annals-of-botany
Transposable elements (TEs), together with polyploidization have a key role in plant evolution, generating changes in genome size, as well as acting as a source for
annals-of-botany
About half of all higher plant species are recognizable as evolutionarily recent polyploids, where multiple whole genomes or sets of chromosomes have come together from close
annals-of-botany
Why did Gingko almost disappear during the Triassic–Jurassic mass extinction when ferns did so well? The answer has relevance for future atmospheric changes.