caa a22 4500 477134777 CHVBK 20180405111714.0 cr unu---uuuuu 170330e19970701xx s 000 0 eng 10.1023/A:1002922220521 doi (NATIONALLICENCE)springer-10.1023/A:1002922220521 Berthaud J. Orstom, 911 Ave Agropolis, BP 5045, 34032, Montpellier Cedex, France aut Strategies for conservation of genetic resources in relation with their utilization [Elektronische Daten] [J. Berthaud] The general interest for genetic resources is based on the opportunities offered by their utilization. Genetic resources are a necessary starting point for plant improvement. Up to now, reflection on the management of genetic resources considered a three-step linear model: conservation → evaluation → utilization. In this system, it is expected that genetic resources are kept in a gene bank, in the best possible way, i.e. using methods maintaining over time the initial genetic state of the accessions and conferring them the longest life possible. In this system, important characteristics of conservation of genetic resources are stability and availability. We present a choice of methods of conservation directed to the maintenance of genetic stability of accessions. We also present methods of conservation in relation with the availability of the genetic material for the various utilizations by the plant breeder. Complementary methods are now proposed for the conservation of genetic resources. These methods correspond to a modified version of the linear model, with interactions between conservation, evaluation and utilization. These new methods place less emphasis on the conservation of genetically well defined accessions but promote genetic mechanisms allowing evolution of these accessions. This evolutionary conservation is obtained by management of experimental populations, or by on-farm management of landraces, relying on knowledge and activity of farmers, and on local breeding. For the wild relatives of crops, an in situ management is to be considered. Using some examples, we discuss the constraints of these new modes of genetic resources conservation and utilization. Kluwer Academic Publishers, 1997 genetic resources nationallicence conservation nationallicence utilization nationallicence in situ nationallicence ex situ nationallicence breeding nationallicence Euphytica Kluwer Academic Publishers 96/1(1997-07-01), 1-12 0014-2336 96:1<1 1997 96 10681 https://doi.org/10.1023/A:1002922220521 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1002922220521 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Berthaud J. Orstom, 911 Ave Agropolis, BP 5045, 34032, Montpellier Cedex, France aut NATIONALLICENCE 773 0- Euphytica Kluwer Academic Publishers 96/1(1997-07-01), 1-12 0014-2336 96:1<1 1997 96 10681 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer