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LX 20 Group Name 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 Unpublished report, Ministry of Agriculture, Trinidad.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: Large vuelta X.
Collected by Pound.
Location: Limoncillo, Ecuador.

Notes: Seedlings from selected trees, established at Marper farm, Trinidad.

10/09/96 Previously recorded in the ICGD and elsewhere that LX stood for Limoncillo. However, Pound 1943b [POU43B] indicates that it stands for Large Vuelta X.

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HELD IN

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: LX 20

DISEASE

Witches Broom: 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; Tolerant; Pound, F.J., 1943

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 Unpublished report, Ministry of Agriculture, Trinidad.
Notes

Trinidad - Marper Farm, University of the West Indies Datafile: DIS_WBDS - Disease reaction to Witches' Broom Experimental Conditions: Budded seedling progeny were established at Marper Farm, Trinidad in 1939-41 after quarantine in Barbados. By the time of this report (1943) the 1939 planted trees stand 15 ft. high, span 8ft. and have borne 20-30 pods. The oldest trees have been checked for incidence of Witches' Broom infection for three consecutive years and in 1943 were classified for resistance on the field observation basis. A tree was classified as resistant if it had less total brooms per annum than it had years of age. For example, a well-developed three year old tree with a total of less than 6 brooms or less than 3 brooms during its third year would be selected. Disease - Crinipellis perniciosa (Marasmius perniciosa), (Local Names: Witches' Broom Disease, Escoba de bruja, Balai de sorciere, Vassoura de bruxa).

Disease

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

REFERENCES

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.

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.