ISHS Acta Horticulturae 182: I International Symposium on Taxonomy of Cultivated Plants
COMPUTER-AIDED CLASSIFICATION OF NON-NUMERICAL GENE BANK DATA |
| Author: | H.J. Roelofsen |
| Abstract:
A gene bank handles its collection material by grouping the accessions into homogeneous classes. In fact it is not the plant material that is classified but the data relevant. Many essential data on genetic resources do not allow formal statistical or numerical treatment, but their accessibility - and thus their usefulness - gains by the application of the data storing and sorting capacity of computer systems. The CGN stores these data in a data base and the CGN information system provides standard classifications for gene bank management and ad hoc classifications for using the collections. The quality of a gene bank information system depends on its structure and on the choice and definition of the used descriptors, so that creating a gene bank informatin system necessarily involves analysing and improving the differentiating ability of the concerned sets of descriptors and descriptor states. An example of this approach is given by evaluating descriptors for lettuce varieties belonging to several head types. | |
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