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RB 29 [BRA]    Theobroma cacao

 Vello, F. & Medeiros, A.G. (1965)
Expedicao botanica a Amazonica brasileira. Cacau Atualidades (Brasil) 2: pp. 47-51.

Derivation: Rio Branco.
Collected by Vello.
Location: Rio Branco, Acre, Brazil.

Bartley, 1995a [BAR95A]. Productivity - high. Flowers - generally have a "thickish" appearance with intensely and brilliantly coloured stamens such that the whole flower appears red. Fruits- small, Amelonado shaped, generally with thick husks. Seeds - small with dark cotyledons.

Notes:  Vello & Medeiros, 1965 [VEL65A] 1965 Brazilian-International expedition.

Bartley, 1998a [BAR98A] Rio Branco is the name of several rivers and the name of a town in Acre.

Bartley 1997a, [BAR97A] The original Belem planting of RB clones comprised a mixture of types. This may account for the mixtures of genotypes in the CEPEC and CATIE collections with regard to RB 48 and RB 49. Any material distributed from CATIE should be identified as such to avoid confusion with clones from the primary source, which should be considered to be the correctly identified genotypes.

Location: R. Branco, Acre, Brazil (primary forest)
Date: 7 July 1965
Coordinates: 67.49 W, 9.59 S
Material collected: Budwood
Notes: Road to Xapuri
Expedition Code: 65BR
   Soria, V.J., 1965
   Vello, F. & Medeiros, A.G., 1966
   Soria, V.J., 1970
   Almeida, C.M.V.C. de et al., 1995
   Vello, F. & Medeiros, A.G., 1965


 Xavier Argout et al., 2023
BioProject: PRJNA880462   NCBI   ENA FASTQ 
Library Source: Genomic
Run: SRR21562159   NCBI   ENA FASTQ 
Experiment: SRX17564420
BioSample: SAMN30841506
SampleName: RB_29

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List received in 2012   Reference
• Accession: 126
   - Local Name: RB 29
List received in 1987   Reference
• Accession: 97
   - Local Name: RB 29 [BRA]
   - Year of Accession: 1966
List received in 2018   Reference
• Accession: 10445
   - Local Name: RB-29
List received in 2012   Reference
• Local Name: RB29
   - Year of Accession: 1973
List received in 2008   Reference
• Accession: VTLC 141
   - Local Name: RB-29
List received in 2008   Reference
• Accession: IDN-13-TCAC-00677
   - Local Name: RB 29 (BRA)
List received in 2011   Reference
• Local Name: RB 29 [BRA]

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Susceptible, 90.00 % Infection
Note: External Severety = 4.0 and Internal Severety = 5.0
 Phillips, W., 1996
Susceptible, 90.00 % Infection
Note: External Severety = 4.0 and Internal Severety = 5.0
 Phillips, W., 1997
Moderate Resistance, sp. P. palmivora (Pod).
Note: Unripe, Attached and not wounded
 Morera, J., 1993
Moderate Resistance, sp. P. palmivora (Pod).
 Phillips, W., 1997
Absent (Expedition data).
 Vello, F. & Medeiros, A.G., 1966
Susceptible (Field Reaction).
 Luz, E.D.M.N. & Silva, S.D.V.M., 1997
Susceptible (Seedling).
 Luz, E.D.M.N. & Silva, S.D.V.M., 1997

Pod Index: 36.9 (pods per kg dried beans)
Productivity: very low

Colour: dark purple
Shape: ovate
Number: 43.0
Total Wet Weight: 39.1 g
Cotyledon Dry Weight: 0.63 g
Cotyledon Length: 18.7 mm
Cotyledon Width: 10.5 mm
Number: 32.0
Dry Weight: 1.56 g

Testa: 4.40 %

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Shape: obovate
Basal Constriction: slight
Apex Form: obtuse
Rugosity: slight
Length: 123.0 mm
Breadth: 69.0 mm
Colour: anthocyanin absent
Hardness: hard
Note: Hardness > 2.0 Mpa
Rugosity: moderate
Weight: 176.0 g
Basal Constriction: slight
Apex Form: obtuse
Rugosity: smooth - very slight
Colour: absent anthocyanin
Pods Per Tree: 1
Shape: amelonado
Colour: green

Accession: RUQ 129
Light Saturated Photosynthetic Rate: 6.42 μmol m2 s-1
Stomatal Conductance: 0.13 mol m2 s-1
Transpiration Rate: 1.47 mmol m2 s-1
Intrinsic Water Use Efficiency: 48.87 μmol mol-1
Instantaneous Water Use Efficiency: 4.35 mmol mol-1
Flush Size: 6
Leaf Area: 302.00 cm2
Leaf Dry Weight: 1.79 g
Specific Leaf Area: 171.80 cm2 g-1

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Colour: slight anthocyanin
Colour: brownish red
Colour: reddish brown

Distance from Base to Widest Part: 161 mm
Length: 313.0 mm
Width: 119.0 mm
Length to Width Ratio: 2.60
Basal Angle: 107.1 °
Apical Angle: 73.0 °
Petiole Length: 22 mm
Pulvinus Length: 16 mm

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Ligule Colour: moderate anthocyanin
Stamen Colour: moderate anthocyanin
Sepal Length: 7.07 mm
Ligule Width: 2.61 mm
Ovule Number: 42
Style Length: 1.76 mm
Pedicel Colour: red
Self Compatibility: self incompatible
Self Compatibility: self incompatible

Vello, F. & Medeiros, A.G. (1965) Expedicao botanica a Amazonica brasileira. Cacau Atualidades (Brasil) 2: pp. 47-51.
Soria, V.J. (1965) Notes on the cocoas collected by the Brazilian-International expedition to some areas of the Brazilian Amazon Basin. Cacao (Costa Rica) 10: pp. 10-13.
Vello, F. & Medeiros, A.G. (1966) Expedicao botanica a Amazonia Brasileira. Communicado ao Pessoal Technico No. 20. Co-ordenacao Technica. CEPLAC/CEPEC, Brazil, pp. 13.
Soria, V.J. (1970) The latest cocoa expeditions to the Amazon Basin. Cacao (Costa Rica) 15: pp. 5-15.
Almeida, C.M.V.C. de, Machado, P.F.R., de, Barriga, J.P. & Silva, F.C.O. da. (1995) Coleta da cacau (Theobroma cacao) da amazonia brasileira: uma abordagem historica e analitica. CEPLAC, SRAO, Porto Velho, RO., Brasil. pp. 92.
Xavier Argout, Gaetan Droc, Olivier Fouet, Mathieu Rouard, Karine Labadie, Bénédicte Rhoné, Gaston Rey Loor & Claire Lanaud (2023) Pangenomic exploration of Theobroma cacao: New Insights into Gene Content Diversity and Selection During Domestication. bioRxiv preprint
CEPEC (2012) Accession list for the CEPEC (Bahia, Brazil) collection. Dr. José Luis Pires, personal communication, February 2012.
Almeida, C.M.V.C. de, Barriga, J.P., Machado, P.F.R. & Bartley, B.G.D. (1987) Evolucao do programa de conservacao dos recursos geneticos de cacau na Amazonia Brasileira. CEPLAC/DEPEA, Boletim Tecnico, Belem, Brasil 5: pp.108.
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.
CPCRI (2008) Cocoa germplasm maintained at the Central Plantation Crops Research Institute (CPCRI) Regional Station, Vittal, India. Data supplied to ICGD by email. D. Balasimha, CPCRI Vittal, India, July 2008.
Susilo, A. (2008) The list of germplasm collected by ICCRI. Personal communication from Agung Susilo, July 2008.
CRU (2011) ICG,T accessions. CRU website.
Phillips, W. (1996) Cocoa cultivar reaction when innoculated with Moniliophthora roreri. Unpublished data supplied by W. Phillips, CATIE, Costa Rica. Personal communication
Phillips, W. (1997) Results of the artificial inoculation of Moniliophthora rorei using the Aspersion method. Unpublished data supplied by W. Phillips, CATIE, Costa Rica. Personal communication
Morera, J. (1993) Reaction of clones to Phytophthora palmivora. J. Morera, CATIE, Costa Rica. Personal Communication.
Phillips, W. (1997) Results of the artificial inoculation of Phytophthora palmivora using the Paper Disc method. Unpublished data supplied by W. Phillips, CATIE, Costa Rica. Personal communication
Luz, E.D.M.N. & Silva, S.D.V.M. (1997) Evaluating resistance/tolerance to Witches' Broom disease in Bahia, Brazil. Final Report to ACRI. CEPLAC/CEPEC, February, 1997. pp. 56. Data supplied to ICGD by Luz & Silva.
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.
Costa Rica - CATIE (1981) Genetic Resources of Cacao. A Catalogue of the CATIE Collection. J.M.M. Engels, Tropical Agricultural Research and Training Centre, CATIE, Turrialba, Costa Rica. Technical Bulletin No. 7: pp. 191.
Brazil - CEPEC (1987) List of clones in the CEPEC, Bahia, Brazil collection. Computer printout from CEPEC. Supplied by B.G.D. Bartley, CEPEC, Brazil.
Morera, J., Paredes, A. & Mora, A. (1991) Germoplasma de cacao en el CATIE entre 1947 y 1991, Programa II: Generacion y transferencia de tecnologia. IICA, San Jose, Costa Rica, pp. 49.
Fiona Lahive (2017) Phenotypic data from climate change trials. Personal communication.
Trinidad - ICGT (1992) Leaf descriptors. Unpublished data supplied on computer diskette by International Cocoa Genebank, Trinidad, University of the West Indies, Trinidad.