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Many new achievements and developments in plant biotechnology have found practical application in commercial plant production and plant breeding. However, protocols for the improvement of the regeneration rate of recalcitrant species, the genetic stability and the quality of in vitro propagated economical important crops are still needed. Therefore the activities of working group 1 in COST 822 focused on three topics: cell competence for root, shoot and embryo initiation, scale-up via organogenesis and/or embryogenesis, and quality control of in vitro produced transplants and elimination of pathogens. Contributions to these topics ranged from more fundamental research with model plants to problems of micropropagation of ornamentals, agricultural crops and woody plants. Histochemical, biochemical and biophysical techniques have used for the investigation of the interaction between exogenous and endogenous plant bioregulators, for the uptake and metabolism of carbohydrates and micronutrients and for the measurement of photoautotrophy of microplants in various stages of acclimatization. Virus elimination by tissue culture and the problems of certification of plant stocks in vitro are discussed. The invited speakers reviewed the commercial aspects of somatic embyrogenesis for forestry plantations, the transformation of fruit trees and the measurement of genomic variations in plant cell cultures.

Additional information

Authors: REUTHER G (EDITOR), Forschungsanstalt Geisenheim, Institut für Biologie, Fachgebiet Botanik (DE)
Bibliographic Reference: EUR 18174 EN (1998) 154pp., ECU 16.50
Availability: Available from the (2)
ISBN: ISBN 92-828-3153-1
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