Search for dissertations about: "Ulf Lagercrantz"
Showing result 6 - 10 of 11 swedish dissertations containing the words Ulf Lagercrantz.
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6. From QTLs to Genes: Flowering Time Variation and CONSTANS-LIKE Genes in the Black Mustard (Brassica nigra)
Abstract : The transition to flowering is a major developmental switch in angiosperms, the timing of which is expected to be important for fitness. In this thesis the focus has been on identification of genes affecting natural variation in flowering time in Brassica nigra. The background for this thesis is an earlier QTL-mapping study in B. nigra. READ MORE
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7. Rates and patterns of bryophyte molecular evolution
Abstract : Plants have been growing on land for at least 450 million years. The bryophytes comprising the three phyla liverworts, mosses and hornworts, are considered to be the closest extant relatives to the plants that colonized land. READ MORE
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8. Genetics and ecology of natural populations
Abstract : I have studied the genetic variation of single species using morphological variation and enzyme electrophoresis. I have striven to understand the interaction between the breeding structure and the ecology of the species in relation to the community, in which it lives. The work was done in the county of Västerbotten, northern Sweden. READ MORE
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9. Effects of Selection and Demography on DNA Polymorphism in Black Mustard (Brassica nigra)
Abstract : The evolution of three genes from the CONSTANS-LIKE gene family is studied in Brassica nigra. We use a combination of population genetic and phylogenetic techniques in order to assess the relative importance of selection and demography on the pattern of DNA variation. READ MORE
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10. Evolution of Flowering Time in the Tetraploid Capsella bursa-pastoris (Brassicaceae)
Abstract : Although polyploidy is believed to be a major source of evolutionary novelty, few studies have examined the genetic basis of phenotypic variation in wild polyploids. In this thesis I have studied the genetic basis of flowering time variation in the wild tetraploid crucifer Capsella bursa-pastoris, as well as the evolutionary history of this species. READ MORE