Sökning: "asterids"

Hittade 4 avhandlingar innehållade ordet asterids.

  1. 1. Evolutionary Studies in Asterids Emphasising Euasterids II

    Författare :Jesper Kårehed; Mats H. G. Gustafsson; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Organismic biology; Apiales; Aquifoliales; Asterales; asterids; Bayesian inference; Cardiopteridaceae; DNA sequence data; Icacinaceae; morphology; parsimony; Pennantiaceae; phylogeny; Stemonuraceae; Organismbiologi; Organism biology; Organismbiologi; systematisk botanik; Systematic Botany;

    Sammanfattning : This thesis deals with evolutionary relationships within the asterids, a group of plants comprising about one-third of all flowering plants.Two new families are recognised: Pennantiaceae and Stemonuraceae. The woody Pennantia from New Zealand and Australia is the sole genus of Pennantiaceae. LÄS MER

  3. 2. Comparative Seed Morphology and Phylogenetics : Case Studies in Basal Angiosperms (ANITA) and Asterids (Lysimachia, Ericales)

    Författare :Il-Chan Oh; Mats Thulin; Arne A. Anderberg; Bertil Ståhl; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biology; Biologi; systematisk botanik; Systematic Botany;

    Sammanfattning : The first half of the thesis deals with the seed morphology of members of the ANITA grade at the base of the angiosperm phylogeny (Amborella, Nymphaeales, Illiciales, Trimeniaceae, and Austrobaileyaceae), especially Illiciaceae and Schisandraceae. Seed characters support a major division between the New World and Old World species of Illicium. LÄS MER

  4. 3. Mistletoes and Thionins : as Selection Models in Natural Products Drug Discovery

    Författare :Sonny Larsson; Anders Backlund; Lars Bohlin; Peter J. Houghton; Uppsala universitet; []
    Nyckelord :Pharmacognosy; drug discovery; mistletoe; phylogeny; cytotoxic peptides; Santalales; Farmakognosi;

    Sammanfattning : The process of drug discovery from natural products starts with the selection of study object. In this project recent knowledge and methods are incorporated to investigate the process of such selection for pharmacognostic investigations. LÄS MER

  5. 4. Life cycle and flowering time control in beet

    Författare :Pierre Pin; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : Flowering plants switch from vegetative growth to flowering at specific points in time. This biological process is triggered by the integration of endogenous stimuli and environmental cues such as changes in day length and temperature. LÄS MER