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ICS 53    Theobroma cacao

 Lockwood, G. & Gyamfi, M.M.O. (1979)
The CRIG cocoa germplasm collection with notes on codes used in the breeding programme at Tafo and elsewhere. Technical Bulletin, No. 10, Cocoa Research Institute, Tafo, Ghana. pp. 62.

Derivation: Imperial College Selections.
Location: ICTA, Trinidad and Tobago.

Notes:  Lockwood & Gyamfi, 1979 [LOC79A] Selections from farms in Trinidad (1-100) and from Criollo progenies (101-107).

Cope, 1949a [COP49A]. One hundred selections were made as a result of a survey started in 1930 by Pound.

Bartley, 1993a [BAR93A]. Numbers 1 to 100 were selected from all over Trinidad, numbers 101 to 107 were Criollo trees selected from a farm but all have been lost and numbers greater than 111 are selections made in an experimental programme.

Bartley, 1996a [BAR96A]. The ICS material includes several clones which resulted from recent (at that time) introductions. These include Criollos from Nicaragua (ICS 60 and its relatives) or Venezuela. Other ICS clones represent "Amazonian" types originally introduced from the Orinoco. It is likely that several introductions were involved in creating the diversity that existed in Trinidad when Pound started the selection work.

Bartley, 1997b [BAR97B] From ICS 113 onwards these clones were used as parents in the AX / MX series. The same cross be known by an equivalent C [TTO] name.

Synonyms: I S C 53


 Mother to:
GEBP 426 /A-F [ADI]    Frances Bekele, 2019
GEBP 428 /A-F [ADI]    Frances Bekele, 2019


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List received in 2018   Reference
• Accession: 10323
   - Local Name: ICS-53
   - Year of Accession: 1979
List received in 1989   Reference
• Local Name: ICS 53
   - Year of Accession: 1961
List received in 1991   Reference
• Local Name: ICS 53
List received in 2011   Reference
• Local Name: ICS 53


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Intermediate, sp. P. palmivora (Pod).
 Sreenivasan, T.N., 1993
Moderate Resistance, sp. P. palmivora (Pod).
 Sreenivasan, T.N., 1980
Susceptible, sp. P. palmivora (Pod).
Note: Unripe, Unattached and not wounded
 Iwaro, D., 1998


 K. F. N’Guessan et al., 2003


 Frances Bekele & Gillian Bidaisee, 2022
Pod Index: 24.7 (pods per kg dried beans)
 Costa Rica - CATIE, 1981
Seed Index: 80.0 (dried beans per 100g)
Productivity: low


 Frances Bekele & Gillian Bidaisee, 2022
Colour: purple
Shape: oblong
Number: 39.0
Total Wet Weight: 59.7 g
Cotyledon Dry Weight: 1.04 g
Cotyledon Length: 23.5 mm
Cotyledon Width: 12.6 mm
 Costa Rica - CATIE, 1981
Colour Dark Purple: Absent
Colour Light Purple: Present
Colour Grey: Absent
Colour White: Absent
Colour Mottled: Absent
Number: 29.7
Maximum Number: 41
Cotyledon Wet Weight: 2.01 g
Cotyledon Dry Weight: 1.25 g
Cotyledon Length: 25.2 mm
Cotyledon Width: 14.1 mm
Cotyledon Thickness: 9.8 mm


 Frances Bekele & Gillian Bidaisee, 2022
Testa: 5.90 %


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 Frances Bekele & Gillian Bidaisee, 2022
Shape: elliptical
Basal Constriction: strong
Apex Form: acute
Rugosity: intense
Length: 180.0 mm
Breadth: 82.0 mm
Colour: anthocyanin absent
Hardness: hard
Note: Hardness > 2.0 Mpa
 Costa Rica - CATIE, 1981
Basal Constriction: very slight
Apex Form: slightly acute - acute
Rugosity: moderate
Husk Thickness: 10.3 mm (13.1 - 7.5)
Length: 180.0 mm
Breadth: 85.0 mm
Colour: moderate / slight - moderate anthocyanin (ridge/furrow)
Weight: 534.0 g
Pods Per Tree: 3
Hardness: soft
Length Breadth Ratio: 2.11
Note: ratio of distances between ridges within a pair and between ridges of two different pairs = 0.86
 Morera, J. et al., 1991
Shape: amelonado
Colour: red


 Frances Bekele & Gillian Bidaisee, 2022
Colour: slight anthocyanin
 Costa Rica - CATIE, 1981
Colour: dark brown


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 Bartley, B.G.D., 1970
Self Compatibility: self incompatible
 Frances Bekele & Gillian Bidaisee, 2022
Ligule Colour: intense anthocyanin
Stamen Colour: moderate anthocyanin
Sepal Length: 7.25 mm
Ligule Width: 2.44 mm
Ovule Number: 46
Style Length: 1.93 mm
Pedicel Colour: red
 Costa Rica - CATIE, 1981
Ligule Colour: slight anthocyanin (apical)
Stamen Colour: anthocyanin absent
Sepal Colour: greyish green
Sepal Width: 2.36 mm
Sepal Length: 9.57 mm
Ligule Length: 8.69 mm
Ligule Width: 2.87 mm
Ovary Colour: intense anthocyanin (apical)
Ovary Width: 1.01 mm
Ovary Length: 1.35 mm
Style Length: 2.43 mm
Staminode Length: 7.82 mm
Pedicel Colour: pink
Self Compatibility: self incompatible
Note: Translation of Methuen colour codes.

Lockwood, G. & Gyamfi, M.M.O. (1979) The CRIG cocoa germplasm collection with notes on codes used in the breeding programme at Tafo and elsewhere. Technical Bulletin, No. 10, Cocoa Research Institute, Tafo, Ghana. pp. 62.
Frances Bekele (2019) Pedigree data for the GEBP clones supplied to ICQC,R (UK) by the Cocoa Research Centre (CRC), Trinidad & Tobago. Data supplied as an Excel spreadsheet by Frances Bekele, April 2019.
Allan Mata (2018) Accession list for the International Cacao Collection at CATIE (IC3). Personal communication.
Cote d'Ivoire - IRCC (1989) Liste des clones en collection. Unpublished Report, IRCC Bingerville, Cote d'Ivoire, Doc. No. 192. D. Clement, IRCC, Cote d'Ivoire. Personal Communication.
Togo - IRCC Togo (1991) Collection des clones de cacaoyers presents au Togo. Unpublished report, IRCC Togo, p.1.
CRU (2011) ICG,T accessions. CRU website.
Sreenivasan, T.N. (1993) Screening for resistance to Black Pod. T.N. Sreenivasan, CRU, Trinidad. Personal Communication.
Sreenivasan, T.N. (1980) Screening for resistance to Black Pod. Cocoa Research Unit Annual Report on Cocoa Research 1975-1980. University of the West Indies, Trinidad. p.16.
Iwaro, D. (1998) Evalation of accessions for Black Pod. Personal Communication 30th October 1998. Data sent by email from Dr. Iwaro.
K. F. N’Guessan, A. B. Eskes & Ph. Lachenaud (2003) Etude de la Resistance du Cacaoyer aux Mirides : Classification des Grands Groupes de Cacaoyers en Fonction de Leur Niveau de Resistance ou Sensibilite. In: Proceedings of the 14th International Cocoa Research Conference, Accra, Ghana (October 2003). Cocoa Producers' Alliance, Lagos, Nigeria.
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.
Costa Rica - CATIE (1981) Genetic Resources of Cacao. A Catalogue of the CATIE Collection. J.M.M. Engels, Tropical Agricultural Research and Training Centre, CATIE, Turrialba, Costa Rica. Technical Bulletin No. 7: pp. 191.
Morera, J., Paredes, A. & Mora, A. (1991) Germoplasma de cacao en el CATIE entre 1947 y 1991, Programa II: Generacion y transferencia de tecnologia. IICA, San Jose, Costa Rica, pp. 49.
Bartley, B.G.D. (1970) A preliminary catalogue of the cacao germplasm held at the University of the West Indies, Trinidad. University of the West Indies, St. Augustine, Trinidad.