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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, Trinidad and Tobago.

2 April 2002. Name new to the database from the ICG,T database/accession list [CRU01A].

 HELD IN

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 United Kingdom, International Cocoa Quarantine Centre, Reading (ICQC,R)
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

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

Pod Index: 25.0 (pods per kg dried beans)
 Reference

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

Testa: 5.80 %
 Reference

Shape: elliptical
Basal Constriction: moderate
Apex Form: indented
Rugosity: moderate
Length: 161.0 mm
Breadth: 80.0 mm
Colour: anthocyanin absent
Hardness: moderate
Note: Hardness > 1.6 and <= 2.0 Mpa
 Reference

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

Colour: moderate anthocyanin
 Reference

Ligule Colour: slight anthocyanin
Stamen Colour: intense anthocyanin
Sepal Length: 7.36 mm
Ligule Width: 2.56 mm
Ovule Number: 52
Style Length: 2.33 mm
Pedicel Colour: reddish
 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 (2022) Morphological data from the International Cocoa Collection (ICG,T) maintained by the Cocoa Research Centre (CRC), Trinidad & Tobago. Unpublished data on fruit, bean, flower and flush morphology supplied as an Excel spreadsheet by Frances Bekele. Last update March 2022.
Fiona Lahive (2017) Phenotypic data from climate change trials. Personal communication.