A presentation by Eshan Dulloo at the European Plant Genetic Resources Conference 2011. The conference brought together global particpants interested in making greater use of the agricultural
A presentation by Eshan Dulloo at the European Plant Genetic Resources Conference 2011. The conference brought together global particpants interested in making greater use of the agricultural biodiversity conserved in genebanks.
In order to add value to collections, it was felt important to suggest new standards for characterization.
Research after 1994 have shown that maximum longevity is achieved at a critical MC below which there is no gain. Drying conditions that achieve the critical moisture level at the storage temperature should be determined using water sorption isotherms which show the relationship between the amount of water in the seeds, usually expressed as a percentage of the total seed weight, and their RH. There could be different combinations of relative humidity and drying temperature for given species. Isotherm relationships, predicted based on seed oil content, are available online at the Kew Seed Information Database (SID) website (see references). Genebank operators should clearly understand the relationship between relative humidity and storage temperature to be able to decide about the best combination for their seed drying environment.
Standards and best practices for genebank management M. Ehsan Dulloo Ph.D. Senior Scientist Agricultural Biodiversity Conservation Bioversity International, Rome, ITALY Co-authors: Imke Thormann and Jan Engels (Bioversity) Kakoli Ghosh (FAO) European Plant Genetic Resources Conference 2011To Serve and Conserve
The CGRFA at its 12th session agreed on the need for revising the Genebank Standards and requested FAO in in cooperation with the ITPGRFA, CGIAR and other international institutions, to undertake this review
Bioversity and FAO prepared a first draft version together with GCDT, ITPGRFA and IPPC
What’s new and/or has changed? 1994 standards Draft Revised standards Definition of ‘standard’ One standard – The lowest level of performance of a routine genebank operation below which there is a high risk of losing genetic integrity (e.g. a probability of 5% or more of losing an allele in an accession over the storage period) Acceptable standards – in many cases minimal but adequate Preferred standards – a higher and thus safer standard