Passport descriptors 1-19 are identical to the multicrop passport descriptors agreed at the 1996 ECP/GR Central Crop Databases Workshop (E. Lipman et al., 1997 Central Crop Databases: Tools for Plant Genetic Resources Management, IPGRI). However, two further passport descriptors specific to Pyrus have been added to the list; plant use and parentage. These additional passport descriptors are proposed to the ECP/GR Malus/Pyrus working group for agreement.

Multicrop passport descriptors

1. Institute code
Code of the institute where the accession is maintained. The codes consist of the 3-letter ISO country code where the institute is located plus a number or acronym as specified by the FAO. (http://apps2.fao.org/wiews/download.thtml)

2. Accession number
This number serves as a unique identifier for accessions, it is assigned when an accession is entered into the collection. Once assigned this number should never be re-assigned to another accession in the collection. Letters should be used before the accession number to identify the genebank or national system, e.g. IDG indicates an accession that comes from the genebank at Bari, Italy.

3. Collecting number
This is the original number assigned by the collector. This descriptor is often innaplicable to Malus accessions, for example accessions obtained from a commercial source will not have an associated collecting number.

4. Genus
The genus name, i.e. Pyrus. Note that the initial letter is uppercase.

5. Species
Specific epithet, in lowercase letters. The author of the specific epithet should be given to accessions of material that were collected from the wild, unless the authority is given at a more detailed taxonomic level. The following abbreviation is allowed ‘sp.’, if this is used the authority should be given at the level of genus.

6. Subtaxa
This descriptor can be used to store any additional taxonomic identifier plus authority (only provided at the most detailed taxonomic level). The following abbreviations are allowed: ‘ssp.’ (for subspecies); ‘var.’ (for variety); ‘convar.’ (for convariety); ‘f.’ (for form).

7. Accession name
Either a registered or other formal designation given to the accession. First letter uppercase.

8. Country of origin
Name of the country in which the sample was originally collected or derived. Use the ISO 3166 extended codes, (i.e. current and old 3 letter ISO 3166 country codes).

9. Location of collecting site
This descriptor is inapplicable to Pyrus accessions obtained from commercial sources, it should only be used for accessions which have been collected. The descriptor should contain location information below the country level that describes where the accession was collected starting with the most detailed information, e.g. CURITIBA 7S, PARANA (meaning 7km south of Curitiba in the state of Panama).

10. Latitude of collecting site
Degrees and minutes followed by N (North) or S (South) (e.g. 1030S). Missing data (minutes) should be indicated with a hyphen e.g. 10-S)

11. Longitude of collecting site
Degrees and minutes followed by E (East) or W (West) (e.g. 07625W). Missing data (minutes) should be indicated with hyphen (e.g. 076-W).

12. Elevation of collecting site
Elevation of collecting site expressed in meters above sea level. Negative values allowed.

13. Collecting date of original sample
This descriptor should only be used for accessions which have been collected. Recorded as YYYYMMDD, where YYYY is the year, MM is the month and DD is the day.

14. Status of sample

• 0 Unknown
• 1 Wild
• 2 Weedy (not used for fruit trees)
• 3 Primitive cultivar/Landrace
• 4 Breeders line
• 5 Advanced cultivar
• 99 Other (Elaborate in REMARKS field)
  

15. Collecting source

• 0 Unknown
• 1 Wild habitat
• 2 Farm
• 3 Market
• 4 Institute/Research organization
• 99 Other (Elaborate in REMARKS field)
  

16. Donor institute
Institute code of the accession donor. The codes consist of the 3-letter ISO country code where the institute is located plus a number or acronym as specified by the FAO.

17. Donor number
Number assigned to the accession by the donor.

18. License

• 0  Unknow
• 1  Yes
• 2  No

19. Other number(s) associated with the accession
Any other identification number known to exist in other collections for this accession.

Additional, Pyrus specific, passport descriptors

A. Plant Use
1. Fruit

• 1.1 Dessert
• 1.2 Cooking/Food Processing/Canning
• 1.3 Juice/Perry/Alcool
• 1.4 Multipurpose

2. Tree

• 2.1 Pollinator
• 2.2 Ornamental
• 2.3 Stock
• 2.4 Botanical sp.
• 2.5 Multipurpose
• 99 Other (Elaborate in REMARKS field)
  
  This character may be scored using only the global codes 1 or 2 (or 99). If more information is available, then the more detailed coding may be used, eg 1.1. An accession with multiple uses should be scored using the relevant codes separated by a semi-colon e.g. 1.1;2.3

B. Parentage

• 1 Mutant - a vegetative mutant of a known cultivar
• 2 Open pollinated - where only the mother is known
• 3 Controlled cross - where both parents are known
• 4 Seedling/Unknown origin

Only one score per accession may be entered for ‘Parentage’.

Remarks : Additional comments. Use this field to give details of plant use, collecting site etc, if necessary.