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TRD 32    Theobroma cacao

 Barbados - Quarantine Station (1994)
List of clones in the Barbados Quarantine Collection.. CRU Newsletter No. 1, Cocoa Research Unit, Trinidad.

Derivation: TRinidaD.
Collected by Warren/Cassie, CRU.
Location: North area of Trinidad, TTO.

 HELD IN

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Current List   ICQC,R Website
• Accession: RUQ 1534     ICQC,R 
   - Local Name: TRD 32
   - Year of Accession: 2004
List received in 2018   Reference
• Accession: 22324
   - Local Name: TRD-32
   - Year of Accession: 2012
List received in 2011   Reference
• Local Name: TRD 32

 DISEASE

 Phytophthora
Resistant, sp. P. palmivora (Pod).
Note: Fully grown, unripe detached pods (4-5 months old)
 A.D. Iwaro & D. R. Butler, 2003
Resistant, sp. P. palmivora (Pod).
Note: Score: 2 (1-8 Scale). Fully grown, unripe detached pods (4-5 months old).
 A.D. Iwaro et al., 2006

 YIELD

 Frances Bekele & Gillian Bidaisee, 2016
Pod Index: 25.0 (pods per kg dried beans)
 Reference

 BEAN

 Frances Bekele & Gillian Bidaisee, 2016
Colour: dark purple
Shape: elliptical
Number: 44.0
Total Wet Weight: 57.6 g
Cotyledon Dry Weight: 0.91 g
Cotyledon Length: 21.5 mm
Cotyledon Width: 11.5 mm
 Reference

 FRUIT

 Frances Bekele & Gillian Bidaisee, 2016
Shape: elliptical
Basal Constriction: moderate
Apex Form: indented
Rugosity: moderate
Length: 161.0 mm
Breadth: 80.0 mm
Colour: anthocyanin absent
Note: Pod wall hardness > 1.6 MPa ? 2.0 MPa
 Reference

 PHENOTYPING

 Fiona Lahive, 2017
Accession: RUQ 1534
Light Saturated Photosynthetic Rate: 6.06 μmol m2 s-1
Stomatal Conductance: 0.11 mol m2 s-1
Transpiration Rate: 1.46 mmol m2 s-1
Intrinsic Water Use Efficiency: 53.19 μmol mol-1
Instantaneous Water Use Efficiency: 3.88 mmol mol-1
Flush Size: 4
Leaf Area: 321.20 cm2
Leaf Dry Weight: 2.10 g
Specific Leaf Area: 156.30 cm2 g-1
 Reference

 FLOWER

 Frances Bekele & Gillian Bidaisee, 2016
Ligule Colour: anthocyanin absent
Stamen Colour: anthocyanin absent
Sepal Length: 7.36 mm
Ligule Width: 2.56 mm
Ovule Number: 52
Style Length: 2.33 mm
Pedicel Colour: red
 Reference

Barbados - Quarantine Station (1994) List of clones in the Barbados Quarantine Collection.. CRU Newsletter No. 1, Cocoa Research Unit, Trinidad.
Allan Mata (2018) Accession list for the International Cacao Collection at CATIE (IC3).. Personal communication.
CRU (2011) ICG,T accessions.. CRU website.
A.D. Iwaro & D. R. Butler (2003) Sources of Resistance to Phytophthora Pod Rot at the International Cocoa Genebank, Trinidad . In: Proceedings of the 14th International Cocoa Research Conference, Accra, Ghana (October 2003). Cocoa Producers' Alliance, Lagos, Nigeria.
A.D. Iwaro, D.R. Butler & A.B. Eskes (2006) Sources of resistance to Phytophthora pod rot at the International Cocoa Genebank, Trinidad. Genetic Resources and Crop Evolution (2006) 53: 99–109
Frances Bekele & Gillian Bidaisee (2016) Morphological data from the International Cocoa Collection (ICG,T) maintained by the Cocoa Research Centre (CRC), Trinidad & Tobago.. Unpublished data on fruit and flower morphology supplied as an Excel spreadsheet by Frances Bekele, April 2016.
Fiona Lahive (2017) Phenotypic data from climate change trials.. Personal communication.