The IBPGR now uses the following definitions in genetic resources documentation.
i) passport data (accession identifiers and information recorded by collectors);Characterization and preliminary evaluation will be the responsibility of the curators, while further characterization and evaluation should be carried out by the plant breeder. The data from further evaluation should be fed back to the curator who will maintain a data file.ii) characterization (consists of recording those characters which are highly heritable, can be easily seen by the eye and are expressed in all environments);
iii) preliminary evaluation (consists of recording a limited number of additional traits thought desirable by a consensus of users of the particular crop).
The following internationally accepted norms for the scoring or coding of descriptor states should be followed as indicated below:
a) measurements are made in metric units;b) many descriptors which are continuously variable are recorded on a 1-9 scale. The authors of this list have sometimes described only a selection of the states, e.g. 3, 5 and 7 for such descriptors. Where this has occurred the full range of codes is available for use by extension of the codes given or by interpolation between them - e.g. in 8. (Pest and disease susceptibility) 1 = extremely low susceptibility and 8 = high to extremely high susceptibility;
c) presence/absence of characters are scored as + (present) and 0 (absent);
d) for descriptors which are not generally uniform throughout the accession (e.g. mixed collection, genetic segregation) mean and standard deviation could be reported where the descriptor is continuous or mean and x where the descriptor is discontinuous;
e) when the descriptor is inapplicable, 0 is used as the descriptor value. E.g. if an accession does not form flowers, a 0 would be scored for the following descriptor.
Flower colourf) blanks are used for information not yet available;1 White
2 Yellow
3 Red
4 Purpleg) standard colour charts e.g. Royal Horticultural Society Colour Chart, Methuen Handbook of Colour, Munsell Colour Charts for Plant Tissues are strongly recommended for all ungraded colour characters (the precise chart used should be specified in the NOTES descriptor, 11).
PASSPORT
1. ACCESSION DATA
1.1 ACCESSION NUMBER
This number serves as a unique identifier for accessions and is assigned by the curator when an accession is entered into his collection. Once assigned this number should never be reassigned to another accession in the collection. Even if an accession is lost, its assigned number is still not available for re-use. Letters should occur before the number to identify the genebank or national system (e.g. MG indicates an accession comes from the genebank at Bari. Italy, PI indicates an accession within the USA system).
1.2 DONOR NAME
Name of institution or individual responsible for donating the germplasm
1.3 DONOR IDENTIFICATION NUMBER
Number assigned to accession by the donor
1.4 OTHER NUMBERS ASSOCIATED WITH THE ACCESSION (other numbers can be added as 1.4.3 etc.)
Any other identification number known to exist in other collections for this accession, e.g. USDA Plant Introduction number (not collection number, see 2.1)
1.4.1 Other number 11.5 SCIENTIFIC NAME
1.4.2 Other number 2
1.5.1 Genus1.6 PEDIGREE/CULTIVAR NAME
1.5.2 Species
1.5.3 Subspecies
1.5.4 Botanical variety
Nomenclature and designations assigned to breeders material
1.7 ACQUISITION DATE
The month and year in which the accession entered the collection, expressed numerically, e.g. June = 06, 1981 = 81
1.7.1 Month1.8 DATE OF LAST REGENERATION OR MULTIPLICATION
1.7.2 Year
The month and year expressed numerically, e.g. October = 10, 1978 = 78
1.8.1 Month1.9 ACCESSION SIZE
1.8.2 Year
Approximate number of seeds of accession in collection
1.10 NUMBER OF TIMES ACCESSION REGENERATED
Number of regenerations or multiplications since original collection
2. COLLECTION DATA
2.1 COLLECTORS NUMBER
Original number assigned by collector of the sample normally composed of the name or initials of the collector(s) followed by a number. This item is essential for identifying duplicates held in different collections and should always accompany subsamples wherever they are sent.
2.2 COLLECTING INSTITUTE
Institute or person collecting/sponsoring the original sample
2.3 DATE OF COLLECTION OF ORIGINAL SAMPLE
Expressed numerically, e.g. March = 03, 1980 = 80
2.3.1 Month2.4 COUNTRY OF COLLECTION
2.3.2 Year
Use the three letter abbreviations supported by the Statistical Office of the United Nations. Copies of these abbreviations are available from the IBPGR Secretariat and have been published in the FAO/IBPGR Plant Genetic Resources Newsletter number 49.
2.5 PROVINCE/STATE
Name of the administrative subdivision of the country in which the sample was collected
2.6 LOCATION OF COLLECTION SITE
Number of kilometres and direction from nearest town, village or map grid reference (e.g. TIMBUKTU7S means 7 km South of Timbuktu)
2.7 LATITUDE OF COLLECTION SITE
Degrees and minutes followed by N (north) or S (south), e.g. 1030S
2.8 LONGITUDE OF COLLECTION SITE
Degrees and minutes followed by E (east) or W (west), e.g. 7625W
2.9 ALTITUDE OF COLLECTION SITE
Elevation above sea level in metres
2.10 COLLECTION SOURCE
1 Wild2.11 STATUS OF SAMPLE
2 Farm land
3 Farm store
4 Backyard
5 Village market
6 Commercial market
7 Institute
8 Other (specify in the NOTES descriptor, 11)
1 Wild2.12 LOCAL/VERNACULAR NAME
2 Weedy
3 Breeders line
4 Primitive cultivar (landrace)
5 Advanced cultivar (bred)
6 Other (specify in the NOTES descriptor, 11)
Name given by farmer to cultivar/landrace/weed
2.13 NUMBER OF PLANTS SAMPLED
Approximate number of plants collected in the field to produce this accession
2.14 PHOTOGRAPH
Was a photograph taken of the accession or environment at collection?
0 = No2.15 OTHER NOTES FROM COLLECTION
+ = Yes2.14.1 Photograph Number
If photo has been taken provide any identification number/system
Collectors will record ecological information. For cultivated crops, cultivation practices such as irrigation, season of sowing, etc. will be recorded.
CHARACTERIZATION AND PRELIMINARY EVALUATION DATA
3. SITE DATA
3.1 COUNTRY OF CHARACTERIZATION AND PRELIMINARY EVALUATION
3.2 SITE (RESEARCH INSTITUTE)
3.3 NAME OF PERSON IN CHARGE OF CHARACTERIZATION
3.4 SOWING DATE
3.4.1 Day3.5 HARVEST DATE
3.4.2 Month
3.4.3 Year
3.5.1 Day4. PLANT DATA
3.5.2 Month
3.5.3 Year
4.1 VEGETATIVE
4.1.1 Rosette period
Expressed as number of days from date of emergence
4.1.2 Location of branches on main axis
0 No branches4.1.3 Angle of branches
1 Predominantly basal
2 Predominantly on the upper third of the plant
3 Predominantly on the upper two-thirds of the plant
4 From base to apex
0 No branches4.1.4 Internode length
3 Appressed, 15° to 20°
5 Intermediate, 20° to 60°
7 Spreading, 60° to 90°
9 Drooping, >90°
3 Short4.1.5 Leaf shape (upper stem leaves) See Fig. 1
5 Intermediate
7 Long
1. Ovate
2 Oblong
3 Lanceolate
4 Linear
Fig. 1. Leaf shape
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Ovate
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Oblong
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Lanceolate
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Linear
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See Fig. 2
1 Entire
2 Serrate or dentate
3 Deeply serrate
Fig. 2. Leaf margin
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Entire
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Serrate or dentate
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Deeply serrate
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1 Light green (yellowish tinge)4.1.8 Extent of leaf spininess
2 Dark green (bluish tinge)
3 Greyish
4 Other (specify in the NOTES descriptor, 11)
0 Non-spiny4.1.9 Leaf hairiness
3 Few spines
5 Intermediate
7 Many spines
0 Non-hairy4.1.10 Outer Involucral Bracts (OIB) Width
3 Few hairs
5 Intermediate
7 Many hairs
In mm at widest point
4.1.11 OIB length
In mm
4.1.12 OIB attitude
1 Close4.1.13 Bracts enclosing head
2 Open
1 Incomplete4.1.14 Number of spines on OIB
2 Complete
0 None4.1.15 Location of spines on OIB
3 Few
5 Intermediate
7 Many
1 Tip only4.1.16 Head (capitulum) shape
2 Tip and few apical
3 Tip and few basal
4 Tip and all along margins
5 Margins only
Primary head shape before flowering (see Fig. 3)
1 Conical
2 Oval
3 Flattened
Fig. 3. Head (capitulum shape)
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Conical
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Oval
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Flattened
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At maturity in mm measured at base 4.2 FLOWER AND FRUIT
4.2.1 Corolla colour in bloom
1 White4.2.2 Corolla colour of dry flower
2 Pale yellow
3 Light yellow
4 Yellow
5 Light orange base
6 Yellow, base and tips of lobes orange
7 Red-orange
8 Pink
9 Purple
10 Other (specify in the NOTES descriptor, 11)
1 Grey-white4.2.3 Pollen production
2 Pale yellow
3 Yellow
4 Light orange
5 Orange base
6 Orange
7 Deep red
8 Other (specify in the NOTES descriptor, 11)
Amount of pollen produced before bee activity in the morning or in the bagged heads
3 Sparse4.3 SEED
5 Intermediate
7 Abundant
4.3.1 Seed colour
1 White4.3.2 Seed hull thickness
2 Cream
3 Brown
4 Black
5 Grey
6 Other (specify in the NOTES descriptor, 11)
0 Hull absent4.3.3 Seed size
1 Thin
2 Normal
3 Think
4 Other (specify in the NOTES descriptor, 11)
3 Small4.3.4 Seed shape See Fig. 4
5 Intermediate
7 Large
1 Oval
2 Conical
3 Crescent
Fig. 4. Seed shape
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Oval
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Conical
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Crescent
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0 Absent
+ Present
FURTHER CHARACTERIZATION AND EVALUATION
5. SITE DATA
5.1 COUNTRY OF FURTHER CHARACTERIZATION AND EVALUATION
5.2 SITE (RESEARCH INSTITUTE)
5.3 NAME OF PERSON IN CHARGE OF EVALUATION
5.4 SOWING DATE
5.4.1 Day5.5 HARVEST DATE
5.4.2 Month
5.4.3 Year
5.5.1 Day6. PLANT DATA
5.5.2 Month
5.5.3 Year
6.1 VEGETATIVE
6.1.1 Days to Emergence
Number of days from planting or first irrigation to 50% seedling emergence
6.1.2 Growth habit
1 Erect6.1.3 Length of branches
2 Bushy
0 No branches6.1.4 Stem colour
3 Short
5 Intermediate
7 Long
1 White6.1.5 Leaf texture
2 Green
3 Other (specify in the NOTES descriptor, 11)
1 fleshy6.1.6 Shape of Outer Involucral Bracts (OIB) in cross-section See Fig. 5
2 Normal
3 Leathery
1 FlatFig. 5. Shape of OIB in cross-section
2 Grooved
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Flat
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Grooved
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0 No spines6.1.8 OIB spine colour
3 Short
5 Intermediate
7 Long
0 No spines6.1.9 Days to physiological maturity
1 Whitish
2 Yellowish
3 Greenish
4 Other (specify in the NOTES descriptor, 11)
Number of days to 75% of plants reaching physiological maturity from date of planting or first irrigation
6.1.10 Plant height
Mean (in cms) of 5 random plants from the middle of the plot
6.1.11 Head (capitulum) number
Per plant
6.1.12 Uniformity of maturation
1 Uniform6.2 FLOWER AND FRUIT
2 Varying
6.2.1 Days to 50% flowering
Number of days from planting or first irrigation to 50% of plants having first flower
6.2.2 Corolla colour at bud stage
1 White6.2.3 Pollen colour
2 Pale yellow
3 Light yellow
4 Yellow
5 Yellow, base and tips of lobes orange
6 Deep red
7 Pink
8 Purple
9 Other (specify in the NOTES descriptor, 11)
1 White6.3 SEED
2 Yellow
6.3.1 Seed shattering at harvest
3 Low shattering6.3.2 Seed number
5 Intermediate
7 High shattering
Per primary head
6.3.3 Yield per plot
In g per m2
6.3.4 Yield per plant
Mean (in g) of 5 random plants from the middle of the plot
6.3.5 1000 seed weight
In g at 6% moisture content
6.3.6 Hull percentage
At 6% moisture content
6.3.7 Oil content
In percent
6.3.8 Iodine value of oil
6.3.9 Fatty acid pattern, % of
1 Palmitic6.3.10 Protein content, in %
2 Stearic
3 Oleic
4 Linoleic
5 Other (specify in the NOTES descriptor, 11)
Of whole seed
6.3.11 Seed dormancy
1 Absent7. STRESS SUSCEPTIBILITY
2 Present
Scored on a scale 1-9 where:
3 Low susceptibility7.1 LOW TEMPERATURE
5 Medium susceptibility
7 High susceptibility
7.2 HIGH TEMPERATURE
7.3 DROUGHT
7.4 HIGH SOIL MOISTURE
7.5 SALINITY
7.6 LODGING
8. PEST AND DISEASE SUSCEPTIBILITY
Scored on a scale 1-9, with pest or disease specified where:
3 Low susceptibility
5 Medium susceptibility
7 High susceptibility
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8.1 PESTS |
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8.1.1 Myzus persicae (Sulzer) |
Green peach aphid |
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8.1.2 Aphis fabae Scop. |
Black bean aphid |
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8.1.3 Aphis helichrysi
Kaltenback |
Leaf-curl plum aphid |
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8.1.4 Lygus hesperus Knight |
Lygus bug |
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8.1.5 Frankliniella occidentallis
Perg. |
Western flower thrip |
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8.1.6 Trichoplusia ni Hbn. |
Looper |
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8.1.7 Homoeosoma electellum
(Hulst.) |
Sunflower moth larvae |
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8.1.8 Melanogromyza virens
(Loew) |
Stem miner |
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8.1.9 Tebranychus urticae (K) |
Red spider mite |
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T. pacificus McGregor |
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8.1.10 Chlorochroa sayi Stol. |
Stink bug |
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Euschistus conspersus Uhler. |
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8.1.11 Liriomyza spp. |
Leaf miner |
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8.1.12 Melanoplus & Schistocera
spp. |
Grasshopper |
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8.1.13 Limoniu spp. |
Wireworm |
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8.1.14 Empoasca filamenta
DeLong |
Leafhopper |
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E. abrupta DeLong |
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8.1.15 Acanthophilus helianthi,
R. |
Safflower fly |
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Chaetorellia jaceae R.D. |
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8.1.16 Meloidogyne incognita
acuta, |
Root knot |
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M. javanica javanica |
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8.2 FUNGI |
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8.2.1 Puccinia carthami Cda. |
Rust |
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8.2.2 Fusarium oxysporum
Schlecht. |
Fusarium wilt 3. |
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f. sp. carthami Klis. and Hous. |
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8.2.3 Verticillium dahliae
Kleb. |
Verticillium wilt |
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8.2.4 Phytophthora dreghsleri
Tucker, |
Phytophthora root and stem rot |
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P. parasitica Dast., |
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8.2.5 Pythium splendens Braun., |
Pythium root rot |
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P. ultimum Trow, |
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8.2.6 Alternaria carthami
Chowd. |
Alternaria leaf spot |
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8.2.7 Sclerotinia sclerotiorum (Lib.)
DeBary |
Sclerotinia wilt and head rot |
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8.2.8 Botrytis cinerea Pers. ex
Fries |
Botrytis head rot |
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8.2.9 Macrophomina phaseoli, (Tassi)
Goid |
Charcoal rot |
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8.2.10 Erysiphe cichoracearum
DC. |
Powdery mildew |
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8.2.11 Cercospora spp. |
Cercospora leafspot |
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8.2.12 Rhizoctonia solani Kuhn |
Rhizoctonia blight |
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8.3 BACTERIA |
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8.3.1 Pseudomonas syringae van
Hall |
Bacterial leaf spot and stem blight |
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8.4 VIRUS AND MYCOPLASMA |
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8.4.1 Mosaic |
Lettuce mosaic virus, alfalfa mosaic virus, turnip mosaic
virus, cucumber mosaic virus |
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8.4.2 Systemic necrosis |
Lettuce mosaic virus, turnip mosaic virus |
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8.4.3 Phyllody |
Mycoplasma |
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9. ALLOENZYME COMPOSITION AND ZYMOTYPE
This may prove to be a useful tool for identifying duplicate accessions
10. CYTOLOGICAL CHARACTERS AND IDENTIFIED GENES
11. NOTES
Give additional information where descriptor state is noted as Other as, for example, in descriptors 2.10, 4.2.1, etc. Also include here any further relevant information.