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ICS 85 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 85

HELD IN

Indonesia, Indonesian Coffee and Cocoa Research Institute (ICCRI): List received in 2008 Reference

Reference

Susilo, A. 2008
The list of germplasm collected by ICCRI. Personal communication from Agung Susilo, July 2008.; • Accession: IDN-13-TCAC-00076; - Local Name: ICS85
Trinidad and Tobago, International Cocoa Genebank, Trinidad (ICG,T): List received in 2011 Reference

Reference

CRU 2011
ICG,T accessions. CRU website.
Notes

Website visited 12th April 2011

Link Unavailable [http://sta.uwi.edu/cru/icgt-accessions.asp]; • Local Name: ICS 85

DISEASE

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Phytophthora: Resistant, sp. P. palmivora (Pod).; Note: Unripe, Unattached and 3mm stab inoculated; Iwaro, A.D. et al., 1998

Reference

Iwaro, A.D., Sreenivasan, T.N. & Umaharan, P. 1998
Cacao resistance to Phytophthora: Effect of pathogen species, inoculation depths and pod maturity. European Journal of Plant Pathology, 104: pp.11-15
Notes

Trinidad - CRU, University of the West Indies Datafile: DIS_PHDS - Disease reaction to Phytophthora Descriptors: Resistance based on lesion size following inoculation with P. palmivora and P. capsici Environment: Inoculations were carried out using the stab technique at two depths (3mm and 9mm) Germplasm: 10 clones from the ICG, T collections Trinidad. Experimental Conditions: Pathogens were obtained from naturally infected pods of different cacao clones at UWI, Trinidad. Pathogens were then grown on pods of the same cacao clone (ICS 1) and re-isolated. Isolates were maintained on 20% V8 juice - calcium carbonate agar medium slants as stock and petri dish cultures were prepared for zoospore extraction. Zoospore suspensions were prepared from 10 days old cultures of P. palmivora and P. capsici by inundating each culture plate of 9cm diameter with 10ml of sterile distilled water (at 10 C), refrigerating for 25 min and incubating in the dark for 30 min. Zoospore concentration was determined by haemocytometer. Fully mature unripe pods were harvested from 10 selected clones and inoculated using the stab-3 or the stab-9 method. A standard injury was created on the pod surface using an apparatus that consists of 20 pins with a piercing length of 3 mm or 9mm. Inoculation was affected by placing a filter paper disk (4 mm diameter) immersed in zoospore suspension on the injured area and covered with a spot plaster. After inoculation pods were arranged in a completely randomised design with five replications. For control treatment treatment sterile distilled water was used instead of the zoospore suspension. Inoculated pods and controls were incubated at 25 C in trays lined with moist paper towels and covered with polythene film. After five days lesion area was assessed. Character Data: Wound: N=no, P=punch inoculation (4 mm hole), S3=stab inoculated to 3 mm depth, S9=stab inoculated to 9 mm depth.

Disease; Susceptible, sp. P. palmivora (Pod).; Note: Unripe, Unattached and 9mm stab inoculated; Iwaro, A.D. et al., 1998

Reference

Iwaro, A.D., Sreenivasan, T.N. & Umaharan, P. 1998
Cacao resistance to Phytophthora: Effect of pathogen species, inoculation depths and pod maturity. European Journal of Plant Pathology, 104: pp.11-15
Notes

Trinidad - CRU, University of the West Indies Datafile: DIS_PHDS - Disease reaction to Phytophthora Descriptors: Resistance based on lesion size following inoculation with P. palmivora and P. capsici Environment: Inoculations were carried out using the stab technique at two depths (3mm and 9mm) Germplasm: 10 clones from the ICG, T collections Trinidad. Experimental Conditions: Pathogens were obtained from naturally infected pods of different cacao clones at UWI, Trinidad. Pathogens were then grown on pods of the same cacao clone (ICS 1) and re-isolated. Isolates were maintained on 20% V8 juice - calcium carbonate agar medium slants as stock and petri dish cultures were prepared for zoospore extraction. Zoospore suspensions were prepared from 10 days old cultures of P. palmivora and P. capsici by inundating each culture plate of 9cm diameter with 10ml of sterile distilled water (at 10 C), refrigerating for 25 min and incubating in the dark for 30 min. Zoospore concentration was determined by haemocytometer. Fully mature unripe pods were harvested from 10 selected clones and inoculated using the stab-3 or the stab-9 method. A standard injury was created on the pod surface using an apparatus that consists of 20 pins with a piercing length of 3 mm or 9mm. Inoculation was affected by placing a filter paper disk (4 mm diameter) immersed in zoospore suspension on the injured area and covered with a spot plaster. After inoculation pods were arranged in a completely randomised design with five replications. For control treatment treatment sterile distilled water was used instead of the zoospore suspension. Inoculated pods and controls were incubated at 25 C in trays lined with moist paper towels and covered with polythene film. After five days lesion area was assessed. Character Data: Wound: N=no, P=punch inoculation (4 mm hole), S3=stab inoculated to 3 mm depth, S9=stab inoculated to 9 mm depth.

Disease
Witches Broom: Tolerant (Pod).; Trinidad - CRU, 1994

Reference

Trinidad - CRU 1994
Cocoa Research Unit. Report for 1994. The University of the West Indies.
Notes

Trinidad - CRU, University of the West Indies Datafile: ICGTF_DS TTO - ICG,T Flower Characters ICGTFRDS TTO - ICG,T Fruit Characters ICGTL_DS TTO - ICG,T Leaf Characters DIS_WBDS - Disease reaction to Witches' Broom Germplasm: Flower descriptor data is presented for 620 clones. Fruit descriptor data is presented for 333 clones. The seed characters of 118 clones are partly described. Leaf descriptor data is presented for 229 clones. The germplasm is mainly of Peruvian, Ecuadorian and Colombian origin. Environment: Each clone is represented in the collection by up to 16 trees planted 1.8 m apart in a block design. Shading is provided by Erythrina sp. (spaced 60m apart) and bananas (spaced 4m apart). Fertilizer, N-P-K (15:10:5), is provided twice a year at 250g per tree. Cyclic irrigation is performed from February to May (10 l of water per plant/week). Soil type group -33 A 1 Soil Series - Cunupia fine sandy clay with restricted internal drainage Lithology - silty clay alluvium Drainage - imperfect Slope category - 0°-2° Meterological data are given in this table as mean maximum, mean minimum and overall mean temperature and mean total rainfall per month over the period 1961-1990. Month Temp. (°C) Rainfall Max Min Mean (mm) January 30.1 20.8 24.6 71.2 February 30.2 20.8 25.0 43.3 March 31.2 21.4 25.7 36.6 April 31.8 22.3 26.5 51.1 May 31.6 23.3 26.9 116.5 June 30.6 23.3 26.4 252.1 July 30.8 23.0 26.2 266.3 August 31.2 22.9 26.4 250.1 September 31.5 22.8 26.5 202.5 October 31.4 22.82 6.41 99.3 November 30.8 22.4 25.9 227.8 December 30.2 21.5 25.2 155.6 Descriptors: The character selection is based on the IBPGR list (IBPGR, 1981 [IBP81A]). Where descriptor states present real measurements, e.g. pod length in cm, the data are given as the mean of all the measurements ± the standard deviation. For some descriptors, such as Leaf, flush colour, the phenotypic expression of the character is coded on a scale from 0 to 9. On this scale '0' represents the lowest or weakest expression of a characteristic and '9' represents the highest or strongest. Leaf and Flower Characteristics p.300-307 Morphological Characteristics of Flowers, Fruit and Leaves- ICGT, Trinidad, Disease - Crinipellis perniciosa (Marasmius perniciosa) (local names: Witches' Broom Disease, Escoba de bruja, Balai de sorciere, Vassoura de bruxa).

Disease

YIELD

Frances Bekele & Gillian Bidaisee, 2022: Pod Index: 19.7 (pods per kg dried beans); Reference

Reference

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.
Notes

This single reference supercedes data entered previously and will be kept up-to-date to allow this information to be grouped together.

Yield Bean Butterfat Fruit Flush Flower

BEAN

Frances Bekele & Gillian Bidaisee, 2022: Colour: purple; Shape: ovate; Number: 41.0; Total Wet Weight: 76.6 g; Cotyledon Dry Weight: 1.24 g; Cotyledon Length: 25.4 mm; Cotyledon Width: 14.8 mm; Reference

Reference

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.
Notes

This single reference supercedes data entered previously and will be kept up-to-date to allow this information to be grouped together.

Yield Bean Butterfat Fruit Flush Flower
Trinidad - Dept of Agriculture, No Date: Colour Light Purple: Present; Colour White: Present; Reference

Reference

Trinidad - Dept of Agriculture No Date
Description of clonal cacao trees (mainly ICS clones). Unpublished notebook, Department of Agriculture, Trinidad.
Notes

Trinidad - Department of Agriculture Datafile: ICS___DS TTO - Descriptions of the ICS clones PROGENY_ Germplasm: Comments on some of the ICS clones (clones ICS 1 to ICS 101, 104 and 111). Descriptors: Morphological characteristics, disease and pest reactions and performance.

Disease Pests Yield Bean Flower

BUTTERFAT

Frances Bekele & Gillian Bidaisee, 2022: Testa: 5.10 %; Reference

Reference

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.
Notes

This single reference supercedes data entered previously and will be kept up-to-date to allow this information to be grouped together.

Yield Bean Butterfat Fruit Flush Flower

FRUIT

Frances Bekele & Gillian Bidaisee, 2022: Shape: oblong; Basal Constriction: strong; Apex Form: acute; Rugosity: slight; Length: 151.0 mm; Breadth: 73.0 mm; Colour: moderate anthocyanin; Hardness: moderate; Note: Hardness > 1.6 and <= 2.0 Mpa; Reference

Reference

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.
Notes

This single reference supercedes data entered previously and will be kept up-to-date to allow this information to be grouped together.

Yield Bean Butterfat Fruit Flush Flower

FLUSH

Frances Bekele & Gillian Bidaisee, 2022: Colour: moderate anthocyanin; Reference

Reference

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.
Notes

This single reference supercedes data entered previously and will be kept up-to-date to allow this information to be grouped together.

Yield Bean Butterfat Fruit Flush Flower

LEAF

Trinidad - ICGT, 1992: Distance from Base to Widest Part: 158 mm; Length: 323.0 mm; Width: 112.0 mm; Length to Width Ratio: 2.70; Basal Angle: 98.4 °; Apical Angle: 85.7 °; Petiole Length: 22 mm; Pulvinus Length: 15 mm; Reference

Reference

Trinidad - ICGT 1992
Leaf descriptors. Unpublished data supplied on computer diskette by International Cocoa Genebank, Trinidad, University of the West Indies, Trinidad.
Notes

Trinidad - International Cocoa Genebank, CRU, University of the West Indies.
Flower descriptor data is presented for 620 clones, fruit descriptor data of 333 and seed characters of 118 clones are partly described. Leaf descriptor data is presented for 229 clones. The germplasm is mainly of Peruvian, Ecuadorian and Colombian origin. Environment: Each clone is represented in the collection by up to 16 trees planted 1.8 m apart in a block design. Shading is provided by Erythrina sp. (spaced 60m apart) and bananas (spaced 4m apart). Fertilizer, N-P-K (15:10:5), is provided twice a year at 250g per tree. Cyclic irrigation is performed from February to May (10 l of water per plant/week). Soil type group -33 A 1 Soil Series - Cunupia fine sandy clay with restricted internal drainage Lithology - silty clay alluvium Drainage - imperfect Slope category - 0°-2° Meterological data are given in this table as mean maximum, mean minimum and overall mean temperature and mean total rainfall per month over the period 1961-1990. Month Temp. (°C) Rainfall Max Min Mean (mm) January 30.1 20.8 24.6 71.2 February 30.2 20.8 25.0 43.3 March 31.2 21.4 25.7 36.6 April 31.8 22.3 26.5 51.1 May 31.6 23.3 26.9 116.5 June 30.6 23.3 26.4 252.1 July 30.8 23.0 26.2 266.3 August 31.2 22.9 26.4 250.1 September 31.5 22.8 26.5 202.5 October 31.4 22.82 6.41 99.3 November 30.8 22.4 25.9 227.8 December 30.2 21.5 25.2 155.6 Descriptors: The character selection is based on the IBPGR list (IBPGR, 1981 [IBP81A]). Where descriptor states present real measurements, e.g. pod length in cm, the data are given as the mean of all the measurements ± the standard deviation. For some descriptors, such as Leaf, flush colour, the phenotypic expression of the character is coded on a scale from 0 to 9. On this scale '0' represents the lowest or weakest expression of a characteristic and '9' represents the highest or strongest. Leaf and Flower Characteristics p.300-307

Leaf

FLOWER

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Bartley, B.G.D., 1970: Self Compatibility: self compatible; 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
Frances Bekele & Gillian Bidaisee, 2022: Ligule Colour: slight anthocyanin; Stamen Colour: anthocyanin absent; Sepal Length: 7.21 mm; Ligule Width: 1.80 mm; Ovule Number: 42; Style Length: 1.70 mm; Pedicel Colour: red; Reference

Reference

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.
Notes

This single reference supercedes data entered previously and will be kept up-to-date to allow this information to be grouped together.

Yield Bean Butterfat Fruit Flush Flower
Trinidad - Dept of Agriculture, No Date: Self Compatibility: self compatible; Reference

Reference

Trinidad - Dept of Agriculture No Date
Description of clonal cacao trees (mainly ICS clones). Unpublished notebook, Department of Agriculture, Trinidad.
Notes

Trinidad - Department of Agriculture Datafile: ICS___DS TTO - Descriptions of the ICS clones PROGENY_ Germplasm: Comments on some of the ICS clones (clones ICS 1 to ICS 101, 104 and 111). Descriptors: Morphological characteristics, disease and pest reactions and performance.

Disease Pests Yield Bean 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.

Susilo, A. (2008) The list of germplasm collected by ICCRI. Personal communication from Agung Susilo, July 2008.

CRU (2011) ICG,T accessions. CRU website.

Iwaro, A.D., Sreenivasan, T.N. & Umaharan, P. (1998) Cacao resistance to Phytophthora: Effect of pathogen species, inoculation depths and pod maturity. European Journal of Plant Pathology, 104: pp.11-15

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.

Trinidad - Dept of Agriculture (No Date) Description of clonal cacao trees (mainly ICS clones). Unpublished notebook, Department of Agriculture, Trinidad.

Trinidad - ICGT (1992) Leaf descriptors. Unpublished data supplied on computer diskette by International Cocoa Genebank, Trinidad, University of the West Indies, Trinidad.

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.