Browsing Doctoral theses (IPV) by Issue Date
Now showing items 1-20 of 37
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Vernalization and photoperiodic regulation of flowering time and population genetic stucture of Norwegian populations of Arabidopsis thaliana
(PhD Thesis;2009:44, Doctoral thesis, 2009)Natural environmental conditions vary across seasons and therefore timing of flowering is a major determinant of plant reproductive success and a trait with a potentially high adaptive value. Plants have developed mechanisms ... -
Genetics of Pooideae freezing tolerance : an evolutionary perspective
(PhD Thesis;2010:37, Doctoral thesis, 2010)Freezing tolerance is an important agricultural trait for forage and cereal grasses belonging to the Pooideae sub-family. Many plants, including the Pooideae grasses, go through a cold acclimation (CA) process when exposed ... -
Use of supplemental lighting towards efficient management of powdery mildew in greenhouse roses
(PhD Thesis;2009:22, Doctoral thesis, 2010)Powdery mildew caused by the Podosphaera pannosa is one of the most widespread and destructive diseases in roses and has been an increasing problem in Norwegian rose production due to lack of disease resistant cultivars. ... -
Studies on the Collectrichum sublineolum (P. Henn)-Sorghum bicolor (L. Moench) pahosystems in Ethiopia
(PhD Thesis;2010:19, Doctoral thesis, 2010)This thesis covers the assessment of anthracnose incidence and severity in Ethiopia, characterisation of Colletotrichum sublineolum isolates from different sorghum regions of Ethiopia, studying the impact of four selected ... -
Therapeutic horticulture for clinical depression in a Green Care context : prospective studies on mental health benefits, active components and existential issues
(PhD Thesis;2010:28, Doctoral thesis, 2010)Historically, asylums were surrounded by gardens, parks and open landscapes, and patients often participated in horticultural activities. Horticultural therapy and therapeutic horticulture are today widely known therapeutic ... -
Winter hardiness and management of velvet bentgrass (Agrostis canina) on golf greens in the Nordic climate
(PhD Thesis;2011:14, Doctoral thesis, 2011)Major concerns for the introduction of velvet bentgrass (Agrostis canina) on Nordic golf courses are whether current cultivars have sufficient winter hardiness, and if it is possible to control the rapid thatch formation ... -
Partial resistance to Fusarium head blight and powdery mildew in wheat
(PhD Thesis;2011:66, Doctoral thesis, 2011)Both Fusarium head blight and powdery mildew are devastating diseases in wheat growing areas around the world. Breeding for resistance has been undergoing for many decades and mostly depends on phenotypic selection. Marker ... -
Genetic engineering and light quality as tools to control shoot elongation in poinsettia (Euphorbia pulcherrimaWilld ex Klotzsch)
(PhD Thesis;2013:42, Doctoral thesis, 2013)Poinsettia (Euphorbia pulcherrima Willd ex Klotzsch) is a non-food and non-feed, vegetatively propagated ornamental plant which is among the economically most important ornamentals worldwide. Desirable plant height is one ... -
Lysiphlebus testaceipes (Cresson) (Hymenoptera: Braconidae, Aphidiinae) in Benin : its potential as a biological control agent for integrated aphid management in vegetable systems
(PhD Thesis;2013:41, Doctoral thesis, 2013)In Benin, vegetable producers’ reliance on toxic synthetic pesticides threatens the environment and human health. However, the recent discovery of Lysiphlebus testaceipes (Cresson) (Hymenoptera: Braconidae, Aphidiinae) in ... -
Stomatal functioning and abscisic acid (ABA) regulation in plants developed in different air humidity regimes
(PhD Thesis;2013:29, Doctoral thesis, 2013)Greenhouse as a production system is important in the production of vegetables, herbs and ornamental plants. However, plant production in continuous high relative air humidity (RH) may results in poor plant quality, due ... -
Photosynthesis and growth at high day temperatures in a CO2 enriched atmosphere
(PhD Thesis;2013:75, Doctoral thesis, 2013)Increasing energy prices have led to the attempt of energy saving and are one of the main research areas in greenhouse plant production. Technical disintegration has been developed, and the greenhouse concept ‘Closed/Semi-Closed ... -
Sequencing and mapping of bread wheat chromosome 7B
(PhD Thesis;2014:68, Doctoral thesis, 2014)The rapid development in DNA sequencing technologies in the recent years have led to the sequencing of several large and complex plant genomes including maize. Recently, the International Wheat Genome Sequencing Consortium ... -
Fusarium infection and its effects on germination and deoxynivalenol content of oats and screening for resistance by VIS-NIR spectroscopic methods
(PhD Thesis;2014:78, Doctoral thesis, 2014)Fusarium head blight (FHB) causes a great concern in Norway, and in the world at large, due to the mycotoxins produced by the causative pathogens. Different cultural practices, including deployment of resistant cultivars, ... -
Effects of culture conditions on the photoautotrophic growth and biochemical composition of Chlamydomonas reinhardtii, as a potential source for hydrogen production
(PhD Thesis;2014:85, Doctoral thesis, 2014)Hydrogen is a particularly attractive energy carrier, since its combustion produces water vapor only. The green microalga Chlamydomonas reinhardtii is able to produce hydrogen under sulfur-deficient anaerobic conditions ... -
Evolution of adaptations to temperate climate in the grass subfamily Pooideae
(PhD Thesis;2016:89, Doctoral thesis, 2016)Temperate biomes are characterized by strong temperature and photoperiod seasonality and frequently occurring frost. Temperate plants have evolved to overcome challenges like cold stress, prolonged winters and short ... -
Control of rush (Juncus spp.) : an expanding weed in grassland areas in Western Norway
(PhD Thesis;2016:83, Doctoral thesis, 2016)The perennial weeds soft rush (Juncus effusus L.) and compact rush (J. conglomeratus L.) have become an increasing problem in grassland in Western Norway and other European countries with high annual precipitation. Their ... -
Improving the seed yield potential of tetraploid red clover (Trifolium pratense L.)
(PhD Thesis;2016:79, Doctoral thesis, 2016)Tetraploid red clover has similar forage properties as diploid red clover. However, tetraploid red clover plants are taller, have thicker stems, larger leaves and flower heads, and bigger seeds resulting in higher forage ... -
Resistance to Septoria nodorum leaf blotch and the importance of sensitivity to necrotrophic effectors in Norwegian spring wheat
(PhD Thesis;2017:63, Doctoral thesis, 2017)Wheat is one of the most important food crops worldwide. In normal years, the proportion of food quality wheat grown in Norway exceeds 50 %. However, the quality and yield can be significantly challenged by unfavorable ... -
Resistance studies and genetic characterization of the barley : Pyrenophora teres pathosystem
(PhD Thesis;2017:52, Doctoral thesis, 2017)Net blotch is a major barley disease in Norway caused by the necrotrophic fungus Pyrenophora teres, which can cause yield losses of up to 40% under conducive conditions. Two forms of this pathogen, P. teres f. teres (Ptt) ... -
Effects of storage time, temperature and modified atmosphere on sensory quality and health related compounds in fresh-cut swede and turnip
(PhD Thesis;2015:9, Doctoral thesis, 2017-07-06)Introducing new fresh-cut vegetable products onto the market may increase vegetable consumption. Usually the availability of Norwegian grown vegetables for fresh-cut production is limited by a short growing season. However, ...