Descriptor list details

Kenya genebank characterization descriptors for groundnuts

1.0

Morphological descriptors as used in the Genetic Resources Research Institute (GeRRI) Kenya. These descriptors were prepared based on the IBPGR/ICRISAT descriptors for groundnut (Revised) published in 1985 and the IBPGR/ICRISAT descriptors for groundnut published in 1992.

Crop
Groundnut
Publisher
Genetic Resources Research Institute
Version
1.0

Date when the accession was planted

Classification
Characterization descriptor
Data type
Date

Number of days from emergence to 50% flowering

Classification
Characterization descriptor
Data type
Numeric

Date when the accession was harvested

Classification
Characterization descriptor
Data type
Date

Number of days from emergence to maturity

Classification
Characterization descriptor
Data type
Numeric

Type of branching pattern of the stem

Classification
Characterization descriptor
Data type
Coded
CodeTermDescription
1Alternate
2Sequential
3Irregular with flowers on main stem
4Irregular without flowers on main stem
5Other (specify in the NOTES descriptor. 11)

Colour of fully expanded leaf

Classification
Characterization descriptor
Data type
Coded
CodeTermDescription
LLight Green
GGreen
DDark Green

Length of fully expanded apical leaflet. Mean of 10 leaflets

Classification
Characterization descriptor
Data type
Numeric
Unit of measure
cm

Length of fully expanded apical leaflet, measured at midpoint. Mean of 10 leaflets

Classification
Characterization descriptor
Data type
Numeric
Unit of measure
cm

Colour of the leaflet

Classification
Characterization descriptor
Data type
Coded
CodeTermDescription
LLight Green
GGreen
DDark Green

Average estimate with first number indicating the most frequent number of seeds per pod. Second indicating the second most frequent no. of seeds per pod

Classification
Characterization descriptor
Data type
Coded
CodeTermDescription
12-1
22-1-3
32-3-1
42-3-4-1
52-4-3-1
63-2-4-1
73-4-2-1
84-3-2-1
9Other (specify in the NOTES descriptor, 11)

Presence, type and prominence of pod beak

Classification
Characterization descriptor
Data type
Scale
0
1
2
3
4
5
6
7
8
9

Legend:

0
Absent
3
Slight
5
Moderate
7
Prominent
9
Very prominent

Presence and type of pod constriction

Classification
Characterization descriptor
Data type
Scale
0
1
2
3
4
5
6
7
8
9

Legend:

0
None
3
Slight
5
Moderate
7
Deep
9
Very deep

Mean of 10 mature pods

Classification
Characterization descriptor
Data type
Numeric
Unit of measure
cm

Measured at the widest point. Mean of 10 mature pods

Classification
Characterization descriptor
Data type
Numeric
Unit of measure
cm

Type of seed colour pattern

Classification
Characterization descriptor
Data type
Coded
CodeTermDescription
1One colour
2Variegated

Primary or major seed colour recorded within one month of harvest after complete drying

Classification
Characterization descriptor
Data type
Free text

Secondary or minor colour on variegated seed

Classification
Characterization descriptor
Data type
Free text

Average of 10 mature seeds

Classification
Characterization descriptor
Data type
Numeric
Unit of measure
cm

Measured in the mid-point. Average of 10 mature seeds

Classification
Characterization descriptor
Data type
Numeric
Unit of measure
cm

Weight of 100 random seeds

Classification
Characterization descriptor
Data type
Numeric
Unit of measure
gm