Sökning: "Compositae"

Visar resultat 1 - 5 av 8 avhandlingar innehållade ordet Compositae.

1. 1. Seed dormancy and germination in an ecological context : comparative studies of annual weeds

   Författare :Laila Karlsson; Per Milberg; Ken Thompson; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Asteraceae; Bidens; Compositae; deadnettle; Galinsoga; germination timing; Guizotia; evolution; Labiatae; Lamiaceae; Lamium; morphophysiological dormancy; Papaveraceae; Papaver; Parthenium; physiological dormancy; poppy; summer annual; Tagetes; Verbesina; winter annual; Biology; Biologi;

   Sammanfattning : Germination ecology studies, i.e. studies of interactions between characteristics of the seeds and environmental circumstances, provide understanding of spatial and temporal patterns of emergence of wild species, as weeds in the field. A large number of species have seed dormancy, i. LÄS MER

3. 2. Studies in the Inuleae-Inulinae (Compositae)

   Författare :Arne A. Anderberg; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Korgblommiga växter;

   Sammanfattning : .... LÄS MER

4. 3. Taxonomy of Relhania and Rosenia (Compositae)

   Författare :Kåre Bremer; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : .... LÄS MER

5. 4. Palynology of Hypochoeridinae and Scolyminae (Compositae)

   Författare :Gamal El-Ghazaly; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : Pollen grains of 35 species representing all 7 genera of the subtribe Hypochoeridinae, and Scolymus hispanicus of the subtribe Scolyminae were examined by LM, SEM and TEM. The pollen grains of annual species are usually smaller than those of perennial ones. The Hypochoeridinae possesses essentially tricolpororate,echinolophate pollen grains. LÄS MER

7. 5. Embryological studies in the Compositae. 1-3

   Författare :Gunnar Harling; Stockholms högskola; []
   Nyckelord :;

   Sammanfattning : .... LÄS MER