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ICS 38 Group Name 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.

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Synonyms: I S C 38

PEDIGREE DETAILS

Parents:: NIC x Unknown Lockwood, G. & Gyamfi, M.M.O., 1979

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.
Notes

Ghana - CRIG Datafile: PROGENY_ Catalogue of the material held in Ghana together with notes on the origins and usages of code names.
Mother to:: C 89 [TRI] Trinidad - ICTA, No Date

Reference

Trinidad - ICTA No Date
List of C Crosses. Unpublished report, Imperial College of Tropical Agriculture, Trinidad. pp.4.
Notes

Trinidad - International Cocoa Genebank, CRU, University of the West Indies Datafile: PROGENY_ List of C crosses bred at Trinidad. B.G.D. Bartley was involved in this breeding programme.

HELD IN

Malaysia, Agricultural Research Centre (ARC): List received in 1990 Reference

Reference

Malaysia - ARC Tuaran 1990
List of clones held in the Dept. of Agriculture's collection, at Sabah, Tuaran, Malaysia. E.B. Tay, Malaysian Cocoa Board, Malaysia. Personal Communication.; • Local Name: ICS 38

DISEASE

Ceratocystis: Susceptible; Iton, E.F., 1959

Reference

Iton, E.F. 1959
Studies on a wilt disease of cacao at River Estate. A Report on Cacao Research, 1957-1958. The Regional Research Centre of the British Caribbean.
Notes

Trinidad - Imperial College of Tropical Agriculture, University of the West Indies Datafile: DIS_CEDS - Disease reaction to Ceratocystis Descriptors: Resistance to Ceratocystis fimbriata based on field studies and surveys of disease incidence after natural infection Environment: River Estate, Regional Research Centre, Imperial College of Tropical Agriculture, Trinidad. 240 acres under a total of 87,000 cacao trees of various ages. The incidence of disease, i.e. the number of diseased trees in relation to the total number of trees as at 31 January 1959 was 0.7%. In the short time since the disease broke out at River Estate all the cacao has not been uniformly exposed to infection and therefore, final conclusions cannot be drawn on the relative susceptibility of different clones or seedlings. Nevertheless some observations are of interest. Germplasm: Initial survey remarks on 13 ICS genotypes, 2 IMC genotypes and 2 SCA genotypes. Progeny of controlled crosses and open pollinations of ICS clones.

Disease
Witches Broom: Tolerant; Enriquez, G. & Soria, V.J., 1977

Reference

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.
Notes

Various data sources Review of disease data complied at Costa Rica - CATIE from sources including: Costa Rica - CATIE, Trinidad - CRU, University of the West Indies, Ghana - WACRI, Ecuador - Pichilingue. Datafile: DIS_MODS - Disease reaction to Monilia Pod Rot DIS___DS - Disease reaction to stress and disease DIS_PHDS - Disease reaction to Phytophthora DIS_SSDS - Disease reaction to CSSV DIS_WBDS - Disease reaction to Witches' Broom DIS_CEDS - Disease reaction to Ceratocystis Descriptors: Information on the type of disease/stress and the reaction of the clone.

Disease

BEAN

Bartley, B.G.D., 1970: Colour White: Present; Size: large; Reference

Reference

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.
Notes

Trinidad - University of the West Indies Datafile: ICGT2_DS TTO - UWI Cacao Collection Germplasm: Passport descriptors for approximately 1000 accessions of mainly South American and Trinidadian origin. Environment: No details. Descriptors: Six descriptors for fruit, seed and compatability characteristics. Character Data: Combinations used FXC = forastero x criollo, TX = trinitario cross

Bean Fruit Flower

FRUIT

Bartley, B.G.D., 1970: Size: large; Reference

Reference

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.
Notes

Trinidad - University of the West Indies Datafile: ICGT2_DS TTO - UWI Cacao Collection Germplasm: Passport descriptors for approximately 1000 accessions of mainly South American and Trinidadian origin. Environment: No details. Descriptors: Six descriptors for fruit, seed and compatability characteristics. Character Data: Combinations used FXC = forastero x criollo, TX = trinitario cross

Bean Fruit Flower

FLOWER

Bartley, B.G.D., 1970: Self Compatibility: self incompatible; Reference

Reference

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.
Notes

Trinidad - University of the West Indies Datafile: ICGT2_DS TTO - UWI Cacao Collection Germplasm: Passport descriptors for approximately 1000 accessions of mainly South American and Trinidadian origin. Environment: No details. Descriptors: Six descriptors for fruit, seed and compatability characteristics. Character Data: Combinations used FXC = forastero x criollo, TX = trinitario cross

Bean Fruit Flower

REFERENCES

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 - ICTA (No Date) List of C Crosses. Unpublished report, Imperial College of Tropical Agriculture, Trinidad. pp.4.

Malaysia - ARC Tuaran (1990) List of clones held in the Dept. of Agriculture's collection, at Sabah, Tuaran, Malaysia. E.B. Tay, Malaysian Cocoa Board, Malaysia. Personal Communication.

Iton, E.F. (1959) Studies on a wilt disease of cacao at River Estate. A Report on Cacao Research, 1957-1958. The Regional Research Centre of the British Caribbean.

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.

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.