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ICS 35    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 35

 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.

 PEDIGREE DETAILS

 Mother to:
SI 35 /2    Trinidad - CRU, 2002
SI 35 /3    Trinidad - CRU, 2002
SI 35 /4    Trinidad - CRU, 2002
 Father to:
SI 35 /2    Trinidad - CRU, 2002
SI 35 /3    Trinidad - CRU, 2002
SI 35 /4    Trinidad - CRU, 2002

 HELD IN

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Current List   ICQC,R Website
• Accession: RUQ 1448     ICQC,R 
   - Local Name: ICS 35
List received in 2018   Reference
• Accession: 22160
   - Local Name: ICS-35
   - Year of Accession: 2008
List received in 2011   Reference
• Local Name: ICS 35

 YIELD

 Frances Bekele & Gillian Bidaisee, 2022
Pod Index: 33.7 (pods per kg dried beans)
 Reference

 BEAN

 Frances Bekele & Gillian Bidaisee, 2022
Colour: purple
Shape: oblong
Number: 28.0
Total Wet Weight: 47.8 g
Cotyledon Dry Weight: 1.06 g
Cotyledon Length: 21.7 mm
Cotyledon Width: 12.2 mm
 Reference

 BUTTERFAT

 Frances Bekele & Gillian Bidaisee, 2022
Testa: 5.40 %
 Reference

 FRUIT

 Frances Bekele & Gillian Bidaisee, 2022
Shape: elliptical
Basal Constriction: slight
Apex Form: obtuse
Rugosity: intense
Length: 182.0 mm
Breadth: 80.0 mm
Colour: moderate anthocyanin
Hardness: hard
Note: Hardness > 2.0 Mpa
 Reference

 PHENOTYPING

 Fiona Lahive, 2017
Accession: RUQ 1448
Light Saturated Photosynthetic Rate: 8.69 μmol m2 s-1
Stomatal Conductance: 0.16 mol m2 s-1
Transpiration Rate: 2.01 mmol m2 s-1
Intrinsic Water Use Efficiency: 56.80 μmol mol-1
Instantaneous Water Use Efficiency: 4.60 mmol mol-1
Flush Size: 3
Leaf Area: 231.80 cm2
Leaf Dry Weight: 1.48 g
Specific Leaf Area: 158.10 cm2 g-1
 Reference

 FLUSH

 Frances Bekele & Gillian Bidaisee, 2022
Colour: intense anthocyanin
 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: 6.72 mm
Ligule Width: 1.86 mm
Ovule Number: 38
Style Length: 2.00 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.
Allan Mata (2018) Accession list for the International Cacao Collection at CATIE (IC3).. Personal communication.
CRU (2011) ICG,T accessions.. CRU website.
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.
Fiona Lahive (2017) Phenotypic data from climate change trials.. Personal communication.
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.