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AM 2 /18 [POU]    Theobroma cacao

 Pound, F.J. (1943)
First report on the selection of cacao trees for resistance to Witches' Broom disease. Unpublished report, Ministry of Agriculture, Trinidad.

Derivation: hacienda AMalia.
Collected by Pound.
Location: Hda. Amalia, Ecuador.

Notes:  Progeny from selected trees presumed to be resistant to Witches Broom.

Seedling material taken from Hacienda Amalia, Ecuador to Marper Estate by Pound in 1937. According to Pound (Bartley, pers.comm.) the most outstanding trees encountered [LOC79A].

Pound, 1943b [POU43B]. Progeny collected from two trees Amalia No.1 and Amalia No. 2.

Bartley, 1997d [BAR97D] There is a great deal of confusion in the interpretation of the numerical part of the name as given by Pound. In a report by Pound on the establishment of this material at Marper Farm in Trinidad he gives the numbers of progenies "observed" (although not necessarily all those that were planted) as Amalia 1 - 69 progenies observed, Amalia 2 - 67 progeny observed.

Synonyms: AM 218 [POU]


 Cornejo, O.E. et al., 2018
BioProject: PRJNA486011   NCBI   ENA FASTQ 
Project: PRJEB28591   EVA (project)   EVA (analysis) 
Library Source: Genomic
Run: SRR7774304   NCBI   ENA FASTQ 
Experiment: SRX4629520
BioSample: SAMN09934401
SampleName: AM_2_18
SampleSource: Costa Rica

List received in 2011   Reference
• Local Name: AM 2/18 [POU]

Pod Index: 26.2 (pods per kg dried beans)

Colour: dark purple
Shape: elliptical
Number: 36.0
Total Wet Weight: 58.6 g
Cotyledon Dry Weight: 1.06 g
Cotyledon Length: 20.1 mm
Cotyledon Width: 13.2 mm

Testa: 4.40 %

Shape: elliptical
Basal Constriction: moderate
Apex Form: mammillate
Rugosity: moderate
Length: 165.0 mm
Breadth: 89.0 mm
Colour: anthocyanin absent
Hardness: soft
Note: Hardness <= 1.6 Mpa

Tissue: leaf
Mean Cadmium Content: 4.84 %
Accumulation: high

Colour: slight anthocyanin

Ligule Colour: anthocyanin absent
Stamen Colour: anthocyanin absent
Sepal Length: 8.13 mm
Ligule Width: 3.12 mm
Ovule Number: 34
Style Length: 2.69 mm
Pedicel Colour: reddish

Pound, F.J. (1943) First report on the selection of cacao trees for resistance to Witches' Broom disease. Unpublished report, Ministry of Agriculture, Trinidad.
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.
Lewis, Caleb, Adrian M. Lennon, Gaius Eudoxie & Pathmanathan Umaharan (2018) Genetic variation in bioaccumulation and partitioning of cadmium in Theobroma cacao L. Science of the Total Environment 640–641, 696–703