Search for dissertations about: "shoots"
Showing result 1 - 5 of 58 swedish dissertations containing the word shoots.
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1. Mechanisms behind pH changes by plant roots and shoots caused by elevated concentration of toxic elements
Abstract : Toxic elements are present in polluted water from mines, industrial outlets, storm water etc. Wetland plants take up toxic elements and increase the pH of the medium. In this thesis was investigated how the shoots of submerged plants and roots of emergent plants affected the pH of the surrounding water in the presence of free toxic ions. READ MORE
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2. Structural Growth in Mountain Birch, Betula pubescens ssp. czerepanovii
Abstract : In this thesis, I have studied long shoot performance in the monoecious, deciduous tree Betula pubescens ssp. czerepanovii. READ MORE
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3. Molecular mechanisms regulating early cone development in Norway spruce Picea abies (Karst)
Abstract : Flower development progress through distinct phases that are controlled by complex genetic networks, which in turn are regulated by both endogenous and exogenous factors. A large number of functional studies have been conducted over the past decades to understand the genetic networks that regulate flower development in angiosperm model species. READ MORE
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4. Genetic variation and sexual reproduction in a moss with dwarf males, Homalothecium lutescens
Abstract : Dwarf males occur in many unrelated groups of organisms. Among land plants they are unique to mosses. Moss dwarf males originate from male spores that land and germinate on the female where their final size is restricted to a few mm. Fertilization in mosses occur over short distances with swimming spermatozoids. READ MORE
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5. Effects of future climate on carbon assimilation of boreal Norway spruce
Abstract : In boreal forests, the main factors limiting biomass production are the harsh climate, which combines a short growing season and low annual levels of incoming solar energy, and the limited availabilit... mery of nitrogen. READ MORE