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GU 226 /V Group Name Theobroma cacao

French Guiana - CIRAD-CP (1994)
Morphological characteristics of the clones held at CIRAD Guyane. Data supplied to ICGD on computer diskette. Dr. Ph. Lachenaud, CIRAD Guyane.

Collected by Clement/Salle IRCC.
Location: Haut Camopi+Ecuador, French Guiana.

Lachenaud, 1993a [LAC93A]. Haut-Camopi material (See CAM 1, 3, 7, 9, 12) generally tall, Leaves - pigmented flushes, Fruit - heterogeneity in pod shape but usually green, clear basal constriction, obtuse apex, intermediate surface rugosity, prominent paired ridges.

Notes: French Guiana - CIRAD-CP, 1994 [GUY94A] GU 112-359 from French Guiana, GU 360-370 from Ecuador.

Some publications have erroneously omitted the GU code and list only the clone number and suffix, for example 269H = GU 269/H and N 123 = GU 123/N.

2 May 2002 Data collected on wild trees from which the GU material were collected as seed has been removed from the ICGD on the recommendation of Philippe Lachenaud (CIRAD-CP). The descriptors referred only to the wild material which was never cloned in genebanks and as such the presence of these data were believed to be misleading. All GU material was collected as seed and properly labelled material should include a letter suffix at the end of the name.

SNP/SSR

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NOTES

5 April 2002. Name new to the database from the France - CIRAD Montpellier database/accession list [MON02B].

COLLECTION DETAILS

Location: R. Camopi, Haut Camopi, French Guiana (primary forest)

Date: 7 May 1987

Coordinates: 56.10 W, 2.30 N

Material collected: Seed

Notes: Crique Cacao (L.Bank). same tree as # 225

Expedition Code: 87GU

Sallee, B., 1987

PEDIGREE DETAILS

Parents:: GU 226 x Unknown

HELD IN

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United Kingdom, International Cocoa Quarantine Centre, Reading (ICQC,R): Current List ICQC,R Website; • Accession: RUQ 1070 ICQC,R; - Local Name: GU 226/V; - Year of Accession: 2000
Costa Rica, Centro Agronómico Tropical de Investigación y Enseñanza (CATIE): List received in 2018 Reference

Reference

Allan Mata 2018
Accession list for the International Cacao Collection at CATIE (IC3). Personal communication.
Notes

Excel file received by email.; • Accession: 22017; - Local Name: GU 226-V; - Year of Accession: 2006
Ghana, Cocoa Research Institute of Ghana (CRIG): List received in 2012 Reference

Reference

CRIG 2012
Cocoa accessions held in the Cocoa Research Institute of Ghana (CRIG). Francis Kwame Padi, personal communication, February 2012.; • Local Name: GU226/V

DISEASE

Phytophthora: Resistant, sp. P. megakarya (Leaf Disc Test).; Note: Described as Very Resistant. Mean of lesion score = 0.59. Population Camopi 3; Paulin, D. et al., 2008

Reference

Paulin, D., Ducamp, M. & Lachenaud, P. 2008
New sources of resistance to Phytophthora megakarya identified in wild cocoa tree populations of French Guiana. Crop Protection. 27: pp 1143–1147.
Notes

Phytophthora megakarya inoculation used strain NS269 isolated from a pod harvested in West Province, Cameroon (village of Fako). This strain is of mating type A1.

Disease; Resistant, sp. P. palmivora (Leaf Disc Test).; Note: Strain TRI 1. Population Camopi 3; Lachenaud, Ph. et al., 2007

Reference

Lachenaud, Ph., Paulin, D., Ducamp, M. & Thevenin, J.-M. 2007
Twenty years of agronomic evaluation of wild cocoa trees (Theobroma cacao L.) from French Guiana. Scientia Horticulturae. 113: pp 313–321.
Notes

Production, in kg of dry cocoa per ha per year: very high > 804; high = 804–750; medium = 400–750; low = 100–399; very low < 100.

Disease Pests Yield

YIELD

Lachenaud, Ph. et al., 2007: Productivity: medium; Reference

Reference

Lachenaud, Ph., Paulin, D., Ducamp, M. & Thevenin, J.-M. 2007
Twenty years of agronomic evaluation of wild cocoa trees (Theobroma cacao L.) from French Guiana. Scientia Horticulturae. 113: pp 313–321.
Notes

Production, in kg of dry cocoa per ha per year: very high > 804; high = 804–750; medium = 400–750; low = 100–399; very low < 100.

Disease Pests Yield

PHENOTYPING

Fiona Lahive, 2017: Accession: RUQ 1070; Light Saturated Photosynthetic Rate: 5.50 μmol m² s^-1; Stomatal Conductance: 0.11 mol m² s^-1; Transpiration Rate: 1.59 mmol m² s^-1; Intrinsic Water Use Efficiency: 52.29 μmol mol^-1; Instantaneous Water Use Efficiency: 3.46 mmol mol^-1; Flush Size: 7; Leaf Area: 256.30 cm²; Leaf Dry Weight: 1.83 g; Specific Leaf Area: 142.30 cm² g^-1; Reference

Reference

Fiona Lahive 2017
Phenotypic data from climate change trials. Personal communication.
Notes

Data for single trees in ICQC,R. Each value is a mean of 2 time points with 6 leaves per tree (12 measurements), except flush size, which was 2 branches per tree (4 measurements).

Phenotyping

REFERENCES

French Guiana - CIRAD-CP (1994) Morphological characteristics of the clones held at CIRAD Guyane. Data supplied to ICGD on computer diskette. Dr. Ph. Lachenaud, CIRAD Guyane.

Sallee, B. (1987) Compte rendu de prospection dans les populations naturelles de Theobroma cacao L. du Haut Camopi (Guyane Francais) 14/4 au 12/5/87. Unpublished report, IRCC/CIRAD, 97387 Kourou, Guyane, pp. 45.

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.

Paulin, D., Ducamp, M. & Lachenaud, P. (2008) New sources of resistance to Phytophthora megakarya identified in wild cocoa tree populations of French Guiana. Crop Protection. 27: pp 1143–1147.

Lachenaud, Ph., Paulin, D., Ducamp, M. & Thevenin, J.-M. (2007) Twenty years of agronomic evaluation of wild cocoa trees (Theobroma cacao L.) from French Guiana. Scientia Horticulturae. 113: pp 313–321.

Fiona Lahive (2017) Phenotypic data from climate change trials. Personal communication.