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On line search

An  on line search facility is offered for passport and evaluation data of accessions that received a CGN number so far. Only samples that can be freely distributed (screened for quarantine diseases; enough seeds available; good germinability) are included in the 'regular' CGN collections.


Download data

  POTAPASP.ZIP (from 13-3-2006; 2770 records incl. some duplicates and extinct accessions)
can be downloaded and contains the passport data in Excel format.

For a list of the available species per taxonomic series including general info on Endosperm Balance Number, chromosome number, region of origin, altitude range and go here.

Till 1994 (FAL, Germany) each accession was identified by a BGRC-number (Braunschweig Genetic Resources Collection; Hoekstra & Seidewitz, 1987). As soon as the accessions are included in the regular CGN collection, they get a CGN number. Origin country, collector number and corresponding accession number in other genbanks are accessed too. More data on accessions duplicated in other potato genebanks can be supplied too, as the genebanks have shared their databases in the framework of APIC, the Association of Potato Intergenebank Collaborators (Bamberg et al., 1995; Huamán et al., 1996, 2000).


Taxonomy

A survey of the concepts of different potato taxonomists on the section Petota has been published by Spooner & van den Berg (1992).




The used taxonomic nomenclature follows Hawkes (1990), with some revisions from Spooner and colleagues. These revisions are conform the changes in nomenclature made at the US potato genebank NRSP-6 (Bamberg et al., 1996). Solanum palustre and S. brevidens are now considered to be the same (Contreras & Spooner) and the earlier name (palustre) has to be used according to rules of taxonomic nomenclature. S. toralapanum will be treated as a subspecies of S. megistacrolobum (Giannattasio & Spooner 1994a, 1994b). The two subspecies of S. microdontum (subsp. microdontum and subsp. gigantophyllum) have been synonymized (van den Berg & Spooner, 1992). S. astleyi became a subspecies of S. boliviense (Spooner et al., 1997). In the past many S. venturii accessions were renamed into S. okadae. Between S. coelestipetalum, S. bukasovii and S. multidissectum accessions were renamed several times. Another example of confusion are the species S. brachycarpum and S. iopetalum. So two genebanks may use different species names for the same sample. For an extensive literature review on potato systematics see: Spooner & Hijmans (2001). April 2004 the US potato genebank announced several changes in potato taxonomy. Other collections may adapt later.

The used species abbreviation codes follow Huaman & Ross (1985).