Search Results

IMC 12    Theobroma cacao

 Pound, F.J. (1938)
Cacao and Witchbroom Disease of South America with notes on other species of Theobroma. . Archives of Cocoa Research 1: pp. 26-71.

Derivation: Iquitos Mixed Calabacillo (Mid Channel).
Collected by Pound.
Location: Iquitos, PER.

Pound, 1938a [POU38A]. Main type - very large lagarta calabacillo pods, oval, very smooth, normal blanco. Seeds large, flat, losenge shaped. 'Hybrid group'-large pods, somewhat warty at stem end but smooth and round like calabacillo at the apex. Third group-small, oval, warty pods, dense flowering. Bartley, 1995a [BAR95A]. The common features of this group of clones are the high ovule numbers (65+) and a specific type of anthocyanin pigmentation in the stamens and base of the corolla. Posnette, 1945a [POS45A]. Petioles are of a type intermediate between those of Nanay (see NA) and Parinari (see PA) types; the constriction is usually short and narrow.

Notes:  Pound, 1938a [POU38A]. Pods probably collected from at least two groups of trees which were free of Witches' Broom.

Bartley, 1995a [BAR95A]. They are probably the progenies of two trees, later propagated as the clones P 18 [POU] and P 21 [POU].

Pound, 1943b [POU43B]. 112 plants were planted at Marper farm.

Bartley, 1997a, [BAR97A] The progeny of the individual clones is not documented and it is important not to consider the IMC clones as one homogeneous group.
 

Synonyms: IQUITOS MIXED 12

 NOTES

Pound, 1938a [POU38A]. Pods probably collected from at least two groups of trees which were free of Witches' Broom. Bartley, 1995a [BAR95A]. They are probably the progenies of two trees, later propagated as the clones P 18 [POU] and P 21 [POU]. Pound, 1943b [POU43B]. 112 plants were planted at Marper farm. Bartley, 1997a, [BAR97A] The progeny of the individual clones is not documented and it is important not to consider the IMC clones as one homogeneous group.

 PEDIGREE DETAILS

 Putative Half-Sibs:
Group P27   Zhang, D. et al., 2009
IMC 10 
IMC 105 
IMC 107 
IMC 11 
IMC 13 
IMC 16 
IMC 18 
IMC 23 
IMC 27 
IMC 30 
IMC 33 
IMC 38 
IMC 42 
IMC 44 
IMC 47 
IMC 53 
IMC 55 
IMC 58 
IMC 59 
IMC 6 
IMC 60 
IMC 61 
IMC 63 
IMC 65 
IMC 68 
IMC 71 
IMC 76 
IMC 77 
IMC 78 
IMC 85 
IMC 9 
IMC 96 
IMC 98 

 POPULATION

 Motamayor, J.C. et al., 2008
'Iquitos' Population
Subgroup: 'IMC I'   Reference

 GENOME DATA LINKS

 Cornejo, O.E. et al., 2018  Reference
BioProject: PRJNA486011   NCBI   ENA FASTQ 
Project: PRJNA486011   EVA (project)   EVA (analysis) 
 
Run: SRR7774328   NCBI   ENA FASTQ 
Experiment: SRX4629496
BioSample: SAMN09934466
SampleSource: Trinidad, Tree_ID: 18339

 HELD IN

List received in 2011   Reference
• Local Name: IMC 12

 YIELD

 Frances Bekele & Gillian Bidaisee, 2022
Pod Index: 27.2 (pods per kg dried beans)
 Reference

 BEAN

 Frances Bekele & Gillian Bidaisee, 2022
Colour: dark purple
Shape: oblong
Number: 49.0
Total Wet Weight: 47.5 g
Cotyledon Dry Weight: 0.75 g
Cotyledon Length: 21.0 mm
Cotyledon Width: 10.7 mm
 Reference

 BUTTERFAT

 Frances Bekele & Gillian Bidaisee, 2022
Testa: 4.30 %
 Reference
 Trinidad - CRU, 1998
Butterfat Content: 52.36 %
Testa: 6.07 %
 Reference

 FRUIT

 Frances Bekele & Gillian Bidaisee, 2022
Shape: oblong
Basal Constriction: slight
Apex Form: obtuse
Rugosity: moderate
Length: 158.0 mm
Breadth: 78.0 mm
Colour: anthocyanin absent
Hardness: moderate
Note: Hardness > 1.6 and <= 2.0 Mpa
 Reference

 FLUSH

 Frances Bekele & Gillian Bidaisee, 2022
Colour: anthocyanin absent
 Reference

 LEAF

 Trinidad - ICGT, 1992
Distance from Base to Widest Part: 130 mm
Length: 275.0 mm
Width: 99.0 mm
Length to Width Ratio: 2.80
Basal Angle: 141.3 °
Apical Angle: 57.3 °
Petiole Length: 14 mm
Pulvinus Length: 12 mm
 Reference

 FLOWER

 Frances Bekele & Gillian Bidaisee, 2022
Ligule Colour: intense anthocyanin
Stamen Colour: intense anthocyanin
Sepal Length: 6.27 mm
Ligule Width: 2.09 mm
Ovule Number: 50
Style Length: 1.57 mm
Pedicel Colour: reddish
 Reference

Pound, F.J. (1938) Cacao and Witchbroom Disease of South America with notes on other species of Theobroma. . Archives of Cocoa Research 1: pp. 26-71.
Zhang, D., Boccara, M., Motilal, L., Mischke S., Johnson, E.S., Butler, D.R., Bailey, B. & Meinhardt, L. (2009) Molecular characterization of an earliest cacao (Theobroma cacao L.) collection from Upper Amazon using microsatellite DNA markers.. Tree Genetics & Genomes. doi:10.1007/s11295-009-0212-2
Motamayor, J.C., Lachenaud, P., da Silva e Mota, J.W., Loor, R., Kuhn, D.N., Brown, J.S. & Schnell, R.J. (2008) Geographic and Genetic Population Differentiation of the Amazonian Chocolate Tree (Theobroma cacao L).. PLoS ONE 3(10): e3311. doi:10.1371/journal.pone.0003311
Cornejo, O.E., Muh-Ching Yee, Victor Dominguez, Mary Andrews, Alexandra Sockell, Erika Strandberg, Donald Livingstone III, Conrad Stack, Alberto Romero, Pathmanathan Umaharan, Stefan Royaert, Nilesh R. Tawari, Pauline Ng, Osman Gutierrez, Wilbert Phillips, Keithanne Mockaitis, Carlos D. Bustamante & Juan C. Motamayor (2018) Population genomic analyses of the chocolate tree, Theobroma cacao L., provide insights into its domestication process. Commun Biol 1, 167
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.
Trinidad - CRU (1998) Fat Analysis Data.. Data supplied on computer diskette by F. Bekele, CRU, Trinidad.
Trinidad - ICGT (1992) Leaf descriptors.. Unpublished data supplied on computer diskette by International Cocoa Genebank, Trinidad, University of the West Indies, Trinidad.