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AMAZ 6 Group Name Theobroma cacao

Chalmers, W.S. (1973)
Report on a visit to Ecuador, Peru, and Brasil, March 1st-April 15th 1973. Unpublished Report. Cocoa Research Unit, University of the West Indies, Trinidad. pp. 31.

Derivation: r. AMAZonas.
Collected by INIAP/UWI Chalmers.
Location: R. Amazonas nr Iquitos, Ecuador.

(Chalmers, 1973a [CHA73A]) AMAZ 3 [CHA] to AMAZ 10 [CHA] and AMAZ 15 [CHA] were selected from a planted area of cocoa with trees showing a range of pod types from five pairs of very distinct, slightly rugose ridges to a very smooth ridgeless calabacillo type. Most had a slight bottleneck and several had a pronounced "blanco" foundation colour. Several pods showed a very characteristic slightly rough, minutely pimpled surface. Some had a very hard pod wall (AMAZ 5, 7 and 8 [CHA]). The number of seeds per pod varied between 11 and 49. All the seeds were dark purple, generally small to medium in size and, within the same pod, plump and flattish seed occured. Only AMAZ 3 [CHA] and AMAZ [15] showed any Witches broom infection. AMAZ 11and AMAZ 12 were collected from Iquitos island, where Pound collected the IMC family. Many of the trees growing in the farm had pods very similar to those of IMC 67 although AMAZ 12 had a more Amelonado shaped pod with a fairly hard shell. AMAZ 13 [CHA] and AMAZ 14 [CHA] had marked pigmentation in the flush. The peduncles were pigmented but not the stamens. The young pods were smooth and Amelonado shaped. The petioles were distinctively short, thick and without any constriction.

Notes: Collected in 1973.

Bartley, 1997b [BAR97B] The seed collected on this expedition was divided between Trinidad and Ecuador. At present only the data on the seedling progeny at Trinidad is available.

Bartley, B.G.D. (1997)
Comments made by Dr. Bartley during his visit to Reading (4th - 15th August 1997). B.G.D.Bartley. Personal Communications.

Notes: The seed collected on this expedition was divided between Trinidad and Ecuador. At present only the data on the seedling progeny at Trinidad is available.

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Synonyms: AMA 6 [CHA], AMAZONAS 6, AMAZON 6

COLLECTION DETAILS

Location: R. Amazonas, Loreto, Peru (cocoa plantation)

Date: April 1973

Coordinates: 73.10 W, 3.45 S

Material collected: Budwood and seeds (pod)

Notes: Iquitos San Jose de Bufeo. 15 min up river from AMAZ 2.

Expedition Code: 73CH

Chalmers, W.S., 1973

PEDIGREE DETAILS

Mother to:: AMAZ 6 /3 Bartley, B.G.D., 1997

Reference

Bartley, B.G.D. 1997
Comments made by Dr. Bartley during his visit to Reading (4th - 15th August 1997). B.G.D.Bartley. Personal Communications.
Notes

Trinidad - International Cocoa Genebank, CRU, University of the West Indies Datafile: PROGENY_

HELD IN

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Brazil, Comissão Executiva do Plano da Lavoura Cacaueira/Centro de Pesquisas do Cacau (CEPLAC/CEPEC): List received in 2012 Reference

Reference

CEPEC 2012
Accession list for the CEPEC (Bahia, Brazil) collection. Dr. José Luis Pires, personal communication, February 2012.; • Accession: 971; - Local Name: AMAZON 6; • Accession: 971; - Local Name: AMAZON 6
Brazil, Mars Center for Cocoa Science: List received in 2012 Reference

Reference

Mars Center for Cocoa Science 2012
Accession list for the Mars Center for Cocoa Science. Jean-Philippe Marelli, personal communication, February 2012.; • Local Name: AMAZ-6; - Year of Accession: 1996
Trinidad and Tobago, International Cocoa Genebank, Trinidad (ICG,T): List received in 2011 Reference

Reference

CRU 2011
ICG,T accessions. CRU website.
Notes

Website visited 12th April 2011

Link Unavailable [http://sta.uwi.edu/cru/icgt-accessions.asp]; • Local Name: AMAZ 6 [CHA]; - Year of Accession: 1973

DISEASE

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Phytophthora: Resistant; Butler, D.R. et al., 1998

Reference

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.
Notes

Trinidad - ICG,T, University of the West Indies Datafile: DIS_PHDS - Disease reaction to Phytophthora DIS_WBDS - Disease reaction to Witches' Broom DIS_VSDS - Disease reaction to VSD DIS_CEDS - Disease reaction to Ceratocystis Descriptors: General observations and main traits of genotypes Environment: No details Germplasm: Clones included in the CFC/ICCO/IPGRI Cocoa Germplasm Utilisation and Conservation project.

Disease
Witches Broom: Absent (Expedition data).; Chalmers, W.S., 1970

Reference

Chalmers, W.S. 1970
Data accumulated from Chalmers' Collection reports from expeditions to Ecuador between 1968-1973. Series of 7 unpublished Reports. Cocoa Research Unit, University of the West Indies. See other reference entries for details.
Notes

Oriente region of Ecuador, Peru and Brazil Datafile: CH70__DC ECU - Chalmers expedition, Field Data Germplasm: Details of accessions collected from the Oriente region of Ecuador, Peru and Brazil. Environment: Accessions were described as they were collected.

Disease Bean Fruit; Resistant (Field Reaction).; Butler, D.R. et al., 1998

Reference

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.
Notes

Trinidad - ICG,T, University of the West Indies Datafile: DIS_PHDS - Disease reaction to Phytophthora DIS_WBDS - Disease reaction to Witches' Broom DIS_VSDS - Disease reaction to VSD DIS_CEDS - Disease reaction to Ceratocystis Descriptors: General observations and main traits of genotypes Environment: No details Germplasm: Clones included in the CFC/ICCO/IPGRI Cocoa Germplasm Utilisation and Conservation project.

Disease

YIELD

Frances Bekele & Gillian Bidaisee, 2022: Pod Index: 22.3 (pods per kg dried beans); Reference

Reference

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.
Notes

This single reference supercedes data entered previously and will be kept up-to-date to allow this information to be grouped together.

Yield Bean Butterfat Fruit Flush Flower

BEAN

Frances Bekele & Gillian Bidaisee, 2022: Colour: purple; Shape: oblong; Number: 34.0; Total Wet Weight: 59.6 g; Cotyledon Dry Weight: 1.32 g; Cotyledon Length: 25.8 mm; Cotyledon Width: 13.6 mm; Reference

Reference

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.
Notes

This single reference supercedes data entered previously and will be kept up-to-date to allow this information to be grouped together.

Yield Bean Butterfat Fruit Flush Flower
Chalmers, W.S., 1970: Colour Dark Purple: Present; Number: 40.0; Note: expedition data; Reference

Reference

Chalmers, W.S. 1970
Data accumulated from Chalmers' Collection reports from expeditions to Ecuador between 1968-1973. Series of 7 unpublished Reports. Cocoa Research Unit, University of the West Indies. See other reference entries for details.
Notes

Oriente region of Ecuador, Peru and Brazil Datafile: CH70__DC ECU - Chalmers expedition, Field Data Germplasm: Details of accessions collected from the Oriente region of Ecuador, Peru and Brazil. Environment: Accessions were described as they were collected.

Disease Bean Fruit

BUTTERFAT

Frances Bekele & Gillian Bidaisee, 2022: Testa: 4.20 %; Reference

Reference

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.
Notes

This single reference supercedes data entered previously and will be kept up-to-date to allow this information to be grouped together.

Yield Bean Butterfat Fruit Flush Flower
Trinidad - CRU, 1998: Butterfat Content: 52.76 %; Testa: 8.36 %; Reference

Reference

Trinidad - CRU 1998
Fat Analysis Data. Data supplied on computer diskette by F. Bekele, CRU, Trinidad.
Notes

Trinidad - CRU, University of the West Indies Datafile: TTOFATDS TTO - Fat Analysis Germplasm: Data is provided on 410 accessions. Environment: No details given. Descriptors: Data for the fat content of the shell, including standard error and the butterfat content is presented. Methods: Ripe, open pollinated pods were harvested, 2 pods from each of 5 trees (10 pods per accession) were selected. The beans were then mixed thoroughly and a sub-sample taken. The sub-sample was then cleaned to remove the mucliage, oven dried and stored at room temperature until analysis. For each accession 2 bean samples (each consisting of 20 beans) were taken from the bulked sample. The beans were shelled and eaach sample was groung using a coffee grinder (2x30 seconds). The ground samples were then dried for 16 hours at 110 degrees C, cooled and stored in a dessicator at 25 degrees C until analysis. From the cried ground samples, a 2 gram sub-sample was weighed into a beaker, 100 ml of 4.0M HCl was added and the sample boiled for 30 minutes. The boiled sample was filtered and the residue washed with distilled water until clear of pigment. After washing, the filtered sample was placed in an extraction thimble and dried for 16 hours at 60 degrees C. The butterfat from the bean samples was extracted using the Soxtec System (Tecetor). Each dried sample was extracted for one hour using petroleum ether (40-60) as the solvent. The butterfat extracted from the sample was then dried in an oven for 30 minutes at 100 degrees C, cooled in a dessicator and the percentage butterfat determined on a dry matter basis.

Butterfat

FRUIT

Frances Bekele & Gillian Bidaisee, 2022: Shape: elliptical; Basal Constriction: strong; Apex Form: acute; Rugosity: slight; Length: 157.0 mm; Breadth: 88.0 mm; Colour: anthocyanin absent; Hardness: hard; Note: Hardness > 2.0 Mpa; Reference

Reference

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.
Notes

This single reference supercedes data entered previously and will be kept up-to-date to allow this information to be grouped together.

Yield Bean Butterfat Fruit Flush Flower

FLUSH

Frances Bekele & Gillian Bidaisee, 2022: Colour: moderate anthocyanin; Reference

Reference

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.
Notes

This single reference supercedes data entered previously and will be kept up-to-date to allow this information to be grouped together.

Yield Bean Butterfat Fruit Flush Flower

LEAF

Trinidad - ICGT, 1992: Distance from Base to Widest Part: 127 mm; Length: 282.0 mm; Width: 89.0 mm; Length to Width Ratio: 3.20; Basal Angle: 110.9 °; Apical Angle: 53.3 °; Petiole Length: 20 mm; Pulvinus Length: 18 mm; Reference

Reference

Trinidad - ICGT 1992
Leaf descriptors. Unpublished data supplied on computer diskette by International Cocoa Genebank, Trinidad, University of the West Indies, Trinidad.
Notes

Trinidad - International Cocoa Genebank, CRU, University of the West Indies.
Flower descriptor data is presented for 620 clones, fruit descriptor data of 333 and seed characters of 118 clones are partly described. Leaf descriptor data is presented for 229 clones. The germplasm is mainly of Peruvian, Ecuadorian and Colombian origin. Environment: Each clone is represented in the collection by up to 16 trees planted 1.8 m apart in a block design. Shading is provided by Erythrina sp. (spaced 60m apart) and bananas (spaced 4m apart). Fertilizer, N-P-K (15:10:5), is provided twice a year at 250g per tree. Cyclic irrigation is performed from February to May (10 l of water per plant/week). Soil type group -33 A 1 Soil Series - Cunupia fine sandy clay with restricted internal drainage Lithology - silty clay alluvium Drainage - imperfect Slope category - 0°-2° Meterological data are given in this table as mean maximum, mean minimum and overall mean temperature and mean total rainfall per month over the period 1961-1990. Month Temp. (°C) Rainfall Max Min Mean (mm) January 30.1 20.8 24.6 71.2 February 30.2 20.8 25.0 43.3 March 31.2 21.4 25.7 36.6 April 31.8 22.3 26.5 51.1 May 31.6 23.3 26.9 116.5 June 30.6 23.3 26.4 252.1 July 30.8 23.0 26.2 266.3 August 31.2 22.9 26.4 250.1 September 31.5 22.8 26.5 202.5 October 31.4 22.82 6.41 99.3 November 30.8 22.4 25.9 227.8 December 30.2 21.5 25.2 155.6 Descriptors: The character selection is based on the IBPGR list (IBPGR, 1981 [IBP81A]). Where descriptor states present real measurements, e.g. pod length in cm, the data are given as the mean of all the measurements ± the standard deviation. For some descriptors, such as Leaf, flush colour, the phenotypic expression of the character is coded on a scale from 0 to 9. On this scale '0' represents the lowest or weakest expression of a characteristic and '9' represents the highest or strongest. Leaf and Flower Characteristics p.300-307

Leaf

FLOWER

Frances Bekele & Gillian Bidaisee, 2022: Ligule Colour: moderate anthocyanin; Stamen Colour: slight anthocyanin; Sepal Length: 7.20 mm; Ligule Width: 2.26 mm; Ovule Number: 46; Style Length: 1.91 mm; Pedicel Colour: reddish; Reference

Reference

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.
Notes

This single reference supercedes data entered previously and will be kept up-to-date to allow this information to be grouped together.

Yield Bean Butterfat Fruit Flush Flower

REFERENCES

Chalmers, W.S. (1973) Report on a visit to Ecuador, Peru, and Brasil, March 1st-April 15th 1973. Unpublished Report. Cocoa Research Unit, University of the West Indies, Trinidad. pp. 31.

Bartley, B.G.D. (1997) Comments made by Dr. Bartley during his visit to Reading (4th - 15th August 1997). B.G.D.Bartley. Personal Communications.

CEPEC (2012) Accession list for the CEPEC (Bahia, Brazil) collection. Dr. José Luis Pires, personal communication, February 2012.

Mars Center for Cocoa Science (2012) Accession list for the Mars Center for Cocoa Science. Jean-Philippe Marelli, personal communication, February 2012.

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.

Chalmers, W.S. (1970) Data accumulated from Chalmers' Collection reports from expeditions to Ecuador between 1968-1973. Series of 7 unpublished Reports. Cocoa Research Unit, University of the West Indies. See other reference entries for details.

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.