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ICS 5    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, TTO.

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 5

 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.

 HELD IN

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Current List   ICQC,R Website
• Accession: RUQ 817     ICQC,R 
   - Local Name: ICS 5
   - Year of Accession: 1998
List received in 2018   Reference
• Accession: 21841
   - Local Name: ICS-5
   - Year of Accession: 2002
• Accession: 21887
   - Local Name: ICS-5
   - Year of Accession: 2005
List received in 2012   Reference
• Local Name: ICS5
List received in 2008   Reference
• Accession: IDN-13-TCAC-00542
   - Local Name: ICS5
List received in 2011   Reference
• Local Name: ICS 5

 DISEASE

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 Phytophthora
Resistant, sp. P. palmivora (Pod).
 Sreenivasan, T.N., 1993
Resistant, sp. P. palmivora (Pod).
 Sreenivasan, T.N., 1980
Tolerant, sp. P. palmivora (Pod).
 Enriquez, G. & Soria, V.J., 1977
 Witches Broom
Tolerant (Vegetative).
 Trinidad - CRU, 1994

 YIELD

 Frances Bekele & Gillian Bidaisee, 2022
Pod Index: 17.0 (pods per kg dried beans)
 Reference

 BEAN

 Frances Bekele & Gillian Bidaisee, 2022
Colour: purple
Shape: elliptical
Number: 43.0
Total Wet Weight: 81.0 g
Cotyledon Dry Weight: 1.37 g
Cotyledon Length: 25.3 mm
Cotyledon Width: 13.6 mm
 Reference

 BUTTERFAT

 Frances Bekele & Gillian Bidaisee, 2022
Testa: 4.90 %
 Reference

 FRUIT

 Bartley, B.G.D., 1970
Size: large
 Reference
 Frances Bekele & Gillian Bidaisee, 2022
Shape: elliptical
Basal Constriction: moderate
Apex Form: acute
Rugosity: moderate
Length: 188.0 mm
Breadth: 82.0 mm
Colour: intense anthocyanin
Hardness: moderate
Note: Hardness > 1.6 and <= 2.0 Mpa
 Reference

 PHENOTYPING

 Fiona Lahive, 2017
Accession: RUQ 817
Light Saturated Photosynthetic Rate: 5.06 μmol m2 s-1
Stomatal Conductance: 0.10 mol m2 s-1
Transpiration Rate: 1.19 mmol m2 s-1
Intrinsic Water Use Efficiency: 62.01 μmol mol-1
Instantaneous Water Use Efficiency: 4.48 mmol mol-1
Flush Size: 3
Leaf Area: 276.00 cm2
Leaf Dry Weight: 2.00 g
Specific Leaf Area: 141.50 cm2 g-1
 Reference

 FLUSH

 Frances Bekele & Gillian Bidaisee, 2022
Colour: anthocyanin absent
 Reference

 LEAF

 Trinidad - ICGT, 1992
Distance from Base to Widest Part: 119 mm
Length: 240.0 mm
Width: 88.0 mm
Length to Width Ratio: 2.70
Basal Angle: 114.5 °
Apical Angle: 88.4 °
Petiole Length: 26 mm
Pulvinus Length: 15 mm
 Reference

 FLOWER

 Bartley, B.G.D., 1970
Self Compatibility: self incompatible
 Reference
 Frances Bekele & Gillian Bidaisee, 2022
Ligule Colour: slight anthocyanin
Stamen Colour: anthocyanin absent
Sepal Length: 8.16 mm
Ligule Width: 1.99 mm
Ovule Number: 42
Style Length: 1.79 mm
Pedicel Colour: red
 Reference

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.
Allan Mata (2018) Accession list for the International Cacao Collection at CATIE (IC3).. Personal communication.
CRIG (2012) Cocoa accessions held in the Cocoa Research Institute of Ghana (CRIG).. Francis Kwame Padi, personal communication, February 2012.
Susilo, A. (2008) The list of germplasm collected by ICCRI.. Personal communication from Agung Susilo, July 2008.
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.
Enriquez, G. & Soria, V.J. (1977) Mejoramiento genético para resistencia a cinco enfermedades del cacao.. In: Proceedings of the 6th International Cocoa Research Conference, Caracas, Venezuela, 1977. Cocoa Producers' Alliance, Lagos, Nigeria. pp. 45-56.
Trinidad - CRU (1994) Cocoa Research Unit. Report for 1994.. The University of the West Indies.
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.
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.
Fiona Lahive (2017) Phenotypic data from climate change trials.. Personal communication.
Trinidad - ICGT (1992) Leaf descriptors.. Unpublished data supplied on computer diskette by International Cocoa Genebank, Trinidad, University of the West Indies, Trinidad.