Plantain specific descriptors

2019

List of specific or adapted descriptors for Plantain

Crop
Banana
Publisher
MusaNet Alliance Bioversity - CIAT
Version
2019

Measured by the number of emitted foliage leaves (or their scars) that are at least 10 cm wide. The scars are the dried-up bases of the petioles of past leaves. Along the pseudostem, the leaves are arranged in two spirals. Count the number along one spiral and multiply by 2. Tip: Mark the number of leaves on the pseudostem as it grows to avoid having to count scars since planting.

Classification
Characterization
Data type
Coded
CodeTermDescription
1<32Small
232-38Medium
3>38Giant

Score on fully developed plant with no environmental stress.

Classification
Characterization
Data type
Coded
CodeTermDescription
1Cylindrical
2Truncate( = cone shaped)
3Asymmetrical
4Spiral(all fruit are attached to a unique crown coiled around the stalk)
5Other

The bunch should still be on the plant.

Classification
Characterization
Data type
Coded
CodeTermDescription
1Very Lax(one can easily place a hand horizontally between the hands of fruit)
2Lax(one can easily place one's hand BETWEEN the hands OF fruit)
3Compact(one can place one's finger, but NOT one's hand, between the hands of fruit)
4Very compact(one cannot place one's finger BETWEEN the hands OF fruit)

Observe only that part of the rachis between the last hand of fruit and the male bud.

Classification
Characterization
Data type
Coded
CodeTermDescription
2Male bud active at harvest timeFrench type
3Male bud exhausted before harvest timeFrench-Horn (Batard)
4Male bud exhausted before maturityFalse Horn
5Truncated, no male rachis or flowersHorn

Recorded only on the fruits arranged symmetrically around the stalk.

Classification
Characterization
Data type
Coded
CodeTermDescription
1Curved towards stalk
2Parallel to the stalk
3Curved upward(obliquely, at a 45° angle upward)
4Perpendicular to the stalk
5Pendant
6Other

Observe the inner fruit in the middle of the mid-hand of the bunch. In case of an asymmetric bunch, score the dominant fruit shape appearing in the bunch.

Classification
Characterization
Data type
Coded
CodeTermDescription
1Straight
2Slightly curved
3Straight in the distal part
4Curved(sharp curve)
5Curved in slight 'S' shape(double curvature)
6Other

Observe before cutting the bunch as relicts may fall off.

Classification
Characterization
Data type
Coded
CodeTermDescription
1Few flower relicts(<20% of the fruits with relicts)
2Persistent flower relicts(>20% of the fruits with relicts)
3Only base of the style persists