Search for dissertations about: "Pinaceae"

Found 5 swedish dissertations containing the word Pinaceae.

2. 1. Biotransformations of Turpentine Constituents : Oxygenation and Esterification

   Author : Marica Lindmark-Henriksson; KTH; []
   Keywords : Picea abies; Pinaceae; Essential oils composition; Terpene alcohol; Hemiacetal; Hemiacetal ester; TMP-turpentine; Monoterpene; alpha-pinene; beta-pinene; Limonene; Verbenol; Pinocarveol; Borneol; Myrtenol; Suspension cell culture; Biotransformation; ;

   Abstract : This thesis describes methods to obtain value–addedcompounds from TMP-turpentine obtained from the spruce, Piceaabies. The methodology focuses on biotransformations using twoapproaches: an oxygenation approach (i.e. oxygenation ofterpene hydrocarbons by cell cultures) and an esterificationapproach (i. READ MORE

4. 2. Effects of methyl jasmonate on chemical defenses of conifer seedlings in relation to feeding by Hylobius abietis

   Author : Lina Lundborg; Anna-Karin Borg-Karlson; Irena Valterová; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Pinaceae; Pinus pinaster; Pinus radiata; Pinus sylvestris; Picea abies; Thaumetopoea pityocampa; Hylobius abietis; Needles; Phloem; Feeding; Vaccination; Priming; Methyl jasmonate; Aromatics; Phenolics; Monoterpenes; Pinaceae; Pinus pinaster; Pinus radiata; Pinus sylvestris; Picea abies; Thaumetopoea pityocampa; Hylobius abietis; Barr; Floem; Ätning; Vaccinering; Metyljasmonat; Aromater; Fenoler; Monoterpener; Kemi; Chemistry;

   Abstract : The chemical elicitor methyl jasmonate (MeJA) could replace insecticides in Europe and Asia for protection of young conifers against the pine weevil (Hylobius abietis). This thesis mainly focuses on the effects of MeJA treatment on chemical defenses of conifers from seedling batches with documented field resistance. READ MORE

5. 3. A forest dark : an evolutionary history of Norway spruce

   Author : Alexis R. Sullivan; Xiao-Ru Wang; Nathaniel Street; María Rosario García-Gil; Bengt Oxelman; Umeå universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; phylogenetics; genome assembly; recombination; Picea; hybridization; mitogenome; Norway spruce; phylogeography; phylogenetic networks; plastome;

   Abstract : Embedded within the relationships among species is a dense forest of gene trees, each with a potentially unique and discordant history. Such widespread genealogical heterogeneity is expected, but embracing this hierarchy of discordance while reconstructing the histories of populations and species remains a major challenge. READ MORE

6. 4. The Gnetales: fossils and phylogenies

   Author : Catarina Rydin; Else Marie Friis; Mari Källersjö; Ulf Swensson; Susana Magallón; Stockholms universitet; []
   Keywords : seed plants; Gnetales; Ephedra; fossils; DNA; phylogeny; morphology;

   Abstract : The phylogeny of seed plants has been debated for more than a hundred years and is still not fully understood. Morphological analyses have consistently resulted in a phylogeny in which cycads are the earliest diverging seed plants, and Gnetales and angiosperms are sisters. Molecular data has, however, rarely supported this result. READ MORE

7. 5. Functional Diversification among MADS-Box Genes and the Evolution of Conifer Seed Cone Development

   Author : Erika Groth; Peter Engström; Karolina Tandre; Tom Gerats; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; conifer; seed cone; evo-devo; morphology; plant development; plant evolution; gene family; gene evolution; AGAMOUS; MADS-box; transcription factor; Picea; Cryptomeria; Thujopsis; Juniperus; Biology; Biologi; Biologi med inriktning mot fysiologisk botanik; Biology with specialization in Physiological Botany;

   Abstract : MADS-box genes are important regulators of reproductive development in seed plants, including both flowering plants and conifers. In this thesis the evolution of the AGAMOUS subfamily of MADS-box genes, and what the ancestral function of this group of genes might have been in the early seed plants about 300 million years ago, was addressed by the discovery of two novel conifer genes, both basal to all previously known AGAMOUS subfamily genes. READ MORE