Sökning: "anther"

Hittade 5 avhandlingar innehållade ordet anther.

  1. 1. Analysis of plant growth regulating substances

    Författare :Barbro Andersson; Bo Jansson; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Plant regulators; phytohormones; pine; spruce; anther; abscisic acid; 3-indoleacetic acid; gibberellin Ag; N- 3-indoleacetyl -aspartic acid; dichlorophene; Amberlite XAD-7; identification; quantification; GC; HPLC; GC-MS; GC-MID; Hormoner;

    Sammanfattning : Natural plant growth regulators (phytohormones) are a group of organic compounds which, in very small amounts, act as regulators of physiological processes in plants.Methods were developed for the analysis of phytohormones in samples from Norway spruce (Picea abies (L.) Karst.) and Scots pine (Pinus sylvestris (L. LÄS MER

  3. 2. Embryogenesis in anther cultures of some species in the families Solanaceae, Ranunculaceae and Papaveraceae

    Författare :Lars Johansson; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : .... LÄS MER

  4. 3. Big survivors with small flowers : Fossil history and evolution of Laurales and Chloranthaceae

    Författare :Helena Eklund; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Developmental biology; Utvecklingsbiologi; Developmental biology; Utvecklingsbiologi; systematisk botanik; Systematic Botany;

    Sammanfattning : This thesis provides palaeobotanical evidence on Cretaceous Laurales and Chloranthaceae, and discusses and evaluates the material in a phylogenetic framework. Chloranthaceae extend back to the Barremian or Aptian and Laurales to the Albian (both Early Cretaceous). LÄS MER

  5. 4. Interactions between natural enemies and the dioecious herb Silene dioica

    Författare :Viktoria Pettersson; Barbara E. Giles; Lars Ericson; Pia Mutikainen; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Silene dioica; Delia criniventris; Caryocolum viscariella; Microbotryum violaceum; plant-herbivore interactions; plant -pathogen interactions; sex bias; sex rato; successional gradients; fitness effects; Skeppsvik Archipelago; Terrestrial ecology; Terrestisk ekologi; ekologisk botanik; Ecological Botany;

    Sammanfattning : About 6% of all angiosperms are dioecious. This separation of sexual function to male and female individuals, and the fundamentally different patterns of reproductive resource allocation that follows that separation, are thought to have important ecological and evolutionary consequences for plant enemy interactions. LÄS MER

  7. 5. Microbotryum violaceum on Silene dioica : understanding traits that influence plant-pathogen interactions

    Författare :Åsa Granberg; Barbara E. Giles; Ulla Carlsson-Granér; Arjen Biere; Umeå universitet; []
    Nyckelord :plant-pathogen interaction; biochemical resistance; breeding system; automixis; race specific resistance; extinction-colonisation dynamics; Silene dioica; Microbotryum violaceum;

    Sammanfattning : The dynamics of a plant-pathogen interaction vary both within and among species. Both spatial structuring and specific genetic and life-history characteristics will affect the interaction and the outcome of a potential co-evolution between the two organisms. LÄS MER