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AM 1 /60 [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 Unpublished report, Ministry of Agriculture, Trinidad.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 160 [POU]

 HELD IN

 Trinidad and Tobago, International Cocoa Genebank, Trinidad (ICG,T)
List received in 2011   Reference
• Local Name: AM 1/60 [POU]

Resistant (Field Reaction).
 Butler, D.R. et al., 1998
Tolerant
 Sreenivasan, T.N., 1987

Pod Index: 25.3 (pods per kg dried beans)
 Reference

Colour: dark purple
Shape: elliptical
Number: 37.0
Total Wet Weight: 59.6 g
Cotyledon Dry Weight: 1.07 g
Cotyledon Length: 21.6 mm
Cotyledon Width: 13.1 mm
 Reference

Testa: 6.00 %
 Reference

Shape: elliptical
Basal Constriction: moderate
Apex Form: obtuse
Rugosity: intense
Length: 176.0 mm
Breadth: 84.0 mm
Colour: slight anthocyanin
Hardness: hard
Note: Hardness > 2.0 Mpa
 Reference

Colour: moderate anthocyanin
 Reference

Ligule Colour: anthocyanin absent
Stamen Colour: intense anthocyanin
Sepal Length: 8.44 mm
Ligule Width: 2.58 mm
Ovule Number: 35
Style Length: 2.50 mm
Pedicel Colour: red
 Reference

Pound, F.J. (1943) First report on the selection of cacao trees for resistance to Witches' Broom disease. Unpublished report, Ministry of Agriculture, Trinidad.
CRU (2011) ICG,T accessions. CRU website.
Butler, D.R., Iwaro, A.D., Thevenin, J.-M., Bekele, F., Sounigo, O., Christopher, Y. & Mooledhar, V. (1998) Individual Institute Reports - Trinidad & Tobago, CRU. Report on the IPGRI project: Cocoa Germplasm Utilisation and Conservation, A Global Approach. Appendix to General Progress Report of Year 1.
Sreenivasan, T.N. (1987) ICGT Germplasm at Marper Farm showing freedom from cushion Brooms and vegetative brooms. Unpublished report, CRU, Trinidad and Tobago.
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.