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Publications

NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.

2017

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Abstract

Knowledge of life cycle progression and reproduction of seaweeds transcends pure academic interest. Successful and sustainable seaweed exploitation and domestication will indeed require excellent control of the factors controlling growth and reproduction. The relative dominance of the ploidy-phases and their respective morphologies, however, display tremendous diversity. Consequently, the ecological and endogenous factors controlling life cycles are likely to be equally varied. A vast number of research papers addressing theoretical, ecological and physiological aspects of reproduction have been published over the years. Here, we review the current knowledge on reproductive strategies, trade-offs of reproductive effort in natural populations, and the environmental and endogenous factors controlling reproduction. Given that the majority of ecophysiological studies predate the “-omics” era, we examine the extent to which this knowledge of reproduction has been, or can be, applied to further our knowledge of life cycle control in seaweeds.

Abstract

Genetic resources of pea (Pisum sativum) may represent valuable traits for inclusion in breeding programs, but may also be valuable directly due to good adaptation to local agro-climatic conditions, or have market potential as heirloom foods. Grain legume production in Norway is limited compared to many other European countries, but increased acreage is desired and expected for several reasons. A short growing season and the specific agro-climatic conditions makes choice of genotypes important for reliable grain and protein yields. During three years, several evaluation field trials with pea genetic resources were carried out in Southern Norway, assessing morphological and phenological traits, seed yields and protein levels. The trials included pea accessions from Norway(1), Sweden(6), Finland(1), Latvia(8), Estonia(9) and Portugal(1), as well as commercial cultivars(6). The genotypes differed widely in grain yield, time and duration of flowering, maturity, plant height, and resistance to lodging. Seed protein levels ranged from 24.0 to 32.7%. Protein levels for these pea genotypes under Norwegian field conditions appear to be higher than in comparable trials in countries at lower latitudes. The research was supported by the EU FP7 project Eurolegume and NordGen (Nordic Genetic Resource Center).