Obiettivo Laminaria digitata (Linné) Lamouroux (Laminariales, Phaeophyta) produces an alginic acid of high quality, which is greatly appreciated on the world market. This species also contains large amounts of iodine, an element that can be thought of as either an interesting industrial by-product or an important grade in food products. The goal of this research is to lay down the biological and genetical bases for the genetic improvement of Laminaria digitata, with the initial aim of breeding a higher quality supply of this raw material for the production of alginate. An additional, long-term goal is to select varieties with modified iodine content, that would be suitable for human consumption (low in iodine) or for the retrieval of iodine from the alginate industry effluents (high in iodine). This project combines refinement of the cultivation techniques in hatchery with an evaluation of the genetic resources for various traits of agronomic interest. In addition life history manipulations will be undertaken, aimed at speeding up future selection programmes. In practice, two complementary approaches will be undertaken: 1) investigation of reproductive biology, in order to master the production of seedlings, cut down generation time or by-pass genetic recombination; and 2) population and quantitative genetics, in order to assess and take advantage of the genetic variability in kelp populations. Experimentally, this includes the following lines of research: manipulation of the sexual as well as of the asexual life cycles of Laminaria digitata; evaluation of the variability and heritability of various quantitative traits such as growth rate, iodine content, yield and quality of alginates, and resistance to epiphytism. A preliminary, methodological work is required, i. e., development of molecular tools to investigate genetic polymorphism. Campo scientifico natural sciencesbiological sciencesgeneticshumanitieshistory and archaeologyhistorynatural scienceschemical sciencesinorganic chemistryhalogensnatural sciencesbiological sciencesreproductive biology Programma(i) FP3-AIR - Specific research and technological development and demonstration programme (EEC) in the field of agriculture and agro-industry, including fisheries, 1990-1994 Argomento(i) 255 - Improvement and conservation of the genetic basis of aquaculture Invito a presentare proposte Data not available Meccanismo di finanziamento CSC - Cost-sharing contracts Coordinatore Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) Contributo UE Nessun dato Indirizzo Station de Nantes Rue de l'Ile d'Yeu 44037 Nantes Francia Mostra sulla mappa Costo totale Nessun dato Partecipanti (3) Classifica in ordine alfabetico Classifica per Contributo UE Espandi tutto Riduci tutto Bundesministeriums fur Bildung,Wissenschaft,Forschung und Technologie Germania Contributo UE Nessun dato Indirizzo Notkestrasse 31 22607 Hamburg Mostra sulla mappa Costo totale Nessun dato CENTRE D'ETUDE ET DE VALORISATION DES ALGUES Francia Contributo UE Nessun dato Indirizzo Presqu'île de Pan Lan L'Armor-Pleublan 22610 PLEUBIAN Mostra sulla mappa Costo totale Nessun dato Centre National de la Recherche Scientifique (CNRS) Francia Contributo UE Nessun dato Indirizzo Place Georges Teissier 29682 Roscoff Mostra sulla mappa Costo totale Nessun dato