Sökning: "plastid DNA"
Visar resultat 11 - 15 av 16 avhandlingar innehållade orden plastid DNA.
11. Taxonomy and Reticulate Phylogeny of Heliosperma and Related Genera (Sileneae, Caryophyllaceae)
Sammanfattning : Heliosperma (nom. cons prop.) comprises 15—20 taxa, most of them endemic to the Balkan Peninsula. DNA sequences from the chloroplast (rps16 intron, psbE-petG spacer) and the nuclear genome (ITS and four putatively unlinked RNA polymerase genes) are used to elucidate phylogenetic relationships within Heliosperma, and its position within Sileneae. LÄS MER
12. Systematics of Woodsia : Ferns, bioinformatics and more
Sammanfattning : Ferns are one of the three main clades of vascular plants. They have few easily studied morphological characters, reflected in a historically unstable classification. The fern genus Woodsia is known to have a complex evolutionary history including numerous polyploid taxa and hybrids. LÄS MER
13. Spikemoss patterns : Systematics and historical biogeography of Selaginellaceae
Sammanfattning : Selaginellaceae, spikemosses, is a heterosporous plant family belonging to the lycophytes. With an estimated age of some 350 million years, the family is historically important as one of the oldest known groups of vascular plants. Selaginellaceae is herbaceous with a worldwide distribution. However, the majority of the ca. LÄS MER
14. Short and long term low temperature responses in Arabidopsis thaliana
Sammanfattning : A unique aspect of plant biology is their ability to respond very rapidly to shifts in their ever-changing environment. To do this, plants need to have evolved mechanisms that enable them to sense their environment and to rapidly respond to different stresses and different combinations of stress. LÄS MER
15. Phylogenetic and phyloclimatic inference of the evolution of Potentilleae (Rosaseae)
Sammanfattning : Polyploidization has occurred many times during the evolution of angiosperms. Allopolyploidization is believed to be the process behind many of these genome duplications, and has resulted in a genetically diverse angiosperm flora. LÄS MER