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ICS 93    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 93

 Mother to:
SI 93 /1    Trinidad - CRU, 2002
T 50 [POS]    Ghana - WACRI, No Date
 Father to:
SI 93 /1    Trinidad - CRU, 2002

 HELD IN

 Nigeria, Cocoa Research Institute of Nigeria (CRIN)
List received in 1994   Reference
• Local Name: ICS 93
   - Year of Accession: 1969
List received in 2011   Reference
• Local Name: ICS 93

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Resistant
 Butler, D.R. et al., 1998
Resistant, sp. P. palmivora (Pod).
 Trinidad - CRU, 1994
Susceptible (Field Reaction).
 Butler, D.R. et al., 1998

Pod Index: 19.4 (pods per kg dried beans)
 Reference

Colour: dark purple
Shape: elliptical
Number: 39.0
Total Wet Weight: 76.6 g
Cotyledon Dry Weight: 1.32 g
Cotyledon Length: 24.1 mm
Cotyledon Width: 13.8 mm
 Reference

Testa: 4.90 %
 Reference

Shape: elliptical
Basal Constriction: moderate
Apex Form: attenuate
Rugosity: moderate
Length: 179.0 mm
Breadth: 82.0 mm
Colour: moderate anthocyanin
Hardness: moderate
Note: Hardness > 1.6 and <= 2.0 Mpa
 Reference

Ligule Colour: slight anthocyanin
Stamen Colour: anthocyanin absent
Sepal Length: 8.14 mm
Ligule Width: 2.60 mm
Ovule Number: 32
Style Length: 2.21 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.
Trinidad - CRU (2002) ICG,T accessions database, reply to queries regarding names new to ICGD. Dr. David Butler, ICG,T Trinidad. Personal Communication. 12 September 2002.
Ghana - WACRI (No Date) WACRI Cocoa Varieties. Explanatory notes. West African Cocoa Research Institute, Tafo, Ghana. A. Asare Nyako, Ghanaian Cocoa Board, Ghana. Personal Communication.
Nigeria - CRIN (1994) CRIN Cocoa germplasm. S.A. Olatoye, CRIN, Nigeria. Personal Communication.
CRU (2011) ICG,T accessions. CRU website.
Butler, D.R., Iwaro, A.D., Thevenin, J.-M., Bekele, F., Sounigo, O., Christopher, Y. & Mooledhar, V. (1998) Individual Institute Reports - Trinidad & Tobago, CRU. Report on the IPGRI project: Cocoa Germplasm Utilisation and Conservation, A Global Approach. Appendix to General Progress Report of Year 1.
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.