The impact of molecular analyses on interpretations concerning the origin and domestication of Theobroma cacao L.
Cacao (Theobroma cacao L.) was cultivated by the Mayas over two thousand years ago. The type of cacao cultivated by the Mayas constitutes what is called the morphogeographic group Criollo, also known as Theobroma cacao L. subsp. cacao. Criollo cacao was thought to originate in Central America and to have evolved independently from the cacao type from the Amazon basin. Morphological diversity and recent molecular analysis had supported this hypothesis. Cacao populations from the Amazon basin are included in the second morphogeographic group, which is called Forastero and is considered as a different subspecies (sphaerocarpum). In order to gain a better understanding of the origin and the genetic basis of the cacao type cultivated in Central America, a study was carried out, after rigorous sampling, using RFLP and microsatellite markers. In contradiction to previous studies, "wild" and domesticated cacao from Central America was found to be genetically close and closer to Colombian-Ecuadorian individuals than Colombian-Ecuadorian individuals were to Peruvian ones. RFLP and microsatellite analyses also revealed a high level of homozygosity and a significantly low genetic diversity within the Criollo group. The results therefore suggest that the Criollo group probably originated from a few individuals in South America and that humans participated in spreading these individuals in Central America.
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Subjects: | F30 - Génétique et amélioration des plantes, Theobroma cacao, variation génétique, domestication, RFLP, microsatellite, marqueur génétique, carte génétique, http://aims.fao.org/aos/agrovoc/c_7713, http://aims.fao.org/aos/agrovoc/c_15975, http://aims.fao.org/aos/agrovoc/c_2360, http://aims.fao.org/aos/agrovoc/c_34255, http://aims.fao.org/aos/agrovoc/c_36574, http://aims.fao.org/aos/agrovoc/c_24030, http://aims.fao.org/aos/agrovoc/c_24002, |
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dig-cirad-fr-4897172024-01-28T10:19:01Z http://agritrop.cirad.fr/489717/ http://agritrop.cirad.fr/489717/ The impact of molecular analyses on interpretations concerning the origin and domestication of Theobroma cacao L. Motamayor Juan Carlos, Risterucci Ange-Marie, Lopez P.A., Lanaud Claire. 2000. In : International conference on science and technology for managing plant genetic diversity in the 21st century. IPGRI, PORIM. Rome : IPGRI, Résumé International Conference on Science and Technology for Managing Plant Genetic Diversity in the 21st Century, Kuala Lumpur, Malaisie, 12 Juin 2000/16 Juin 2000.http://www.ipgri.cgiar.org/sta21/abstracts.doc <http://www.ipgri.cgiar.org/sta21/abstracts.doc> The impact of molecular analyses on interpretations concerning the origin and domestication of Theobroma cacao L. Motamayor, Juan Carlos Risterucci, Ange-Marie Lopez, P.A. Lanaud, Claire eng 2000 IPGRI International conference on science and technology for managing plant genetic diversity in the 21st century F30 - Génétique et amélioration des plantes Theobroma cacao variation génétique domestication RFLP microsatellite marqueur génétique carte génétique http://aims.fao.org/aos/agrovoc/c_7713 http://aims.fao.org/aos/agrovoc/c_15975 http://aims.fao.org/aos/agrovoc/c_2360 http://aims.fao.org/aos/agrovoc/c_34255 http://aims.fao.org/aos/agrovoc/c_36574 http://aims.fao.org/aos/agrovoc/c_24030 http://aims.fao.org/aos/agrovoc/c_24002 Cacao (Theobroma cacao L.) was cultivated by the Mayas over two thousand years ago. The type of cacao cultivated by the Mayas constitutes what is called the morphogeographic group Criollo, also known as Theobroma cacao L. subsp. cacao. Criollo cacao was thought to originate in Central America and to have evolved independently from the cacao type from the Amazon basin. Morphological diversity and recent molecular analysis had supported this hypothesis. Cacao populations from the Amazon basin are included in the second morphogeographic group, which is called Forastero and is considered as a different subspecies (sphaerocarpum). In order to gain a better understanding of the origin and the genetic basis of the cacao type cultivated in Central America, a study was carried out, after rigorous sampling, using RFLP and microsatellite markers. In contradiction to previous studies, "wild" and domesticated cacao from Central America was found to be genetically close and closer to Colombian-Ecuadorian individuals than Colombian-Ecuadorian individuals were to Peruvian ones. RFLP and microsatellite analyses also revealed a high level of homozygosity and a significantly low genetic diversity within the Criollo group. The results therefore suggest that the Criollo group probably originated from a few individuals in South America and that humans participated in spreading these individuals in Central America. conference_item info:eu-repo/semantics/conferenceObject Conference info:eu-repo/semantics/closedAccess http://www.ipgri.cgiar.org/sta21/abstracts.doc http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=172549 http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=173237 info:eu-repo/semantics/altIdentifier/purl/http://www.ipgri.cgiar.org/sta21/abstracts.doc |
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F30 - Génétique et amélioration des plantes Theobroma cacao variation génétique domestication RFLP microsatellite marqueur génétique carte génétique http://aims.fao.org/aos/agrovoc/c_7713 http://aims.fao.org/aos/agrovoc/c_15975 http://aims.fao.org/aos/agrovoc/c_2360 http://aims.fao.org/aos/agrovoc/c_34255 http://aims.fao.org/aos/agrovoc/c_36574 http://aims.fao.org/aos/agrovoc/c_24030 http://aims.fao.org/aos/agrovoc/c_24002 F30 - Génétique et amélioration des plantes Theobroma cacao variation génétique domestication RFLP microsatellite marqueur génétique carte génétique http://aims.fao.org/aos/agrovoc/c_7713 http://aims.fao.org/aos/agrovoc/c_15975 http://aims.fao.org/aos/agrovoc/c_2360 http://aims.fao.org/aos/agrovoc/c_34255 http://aims.fao.org/aos/agrovoc/c_36574 http://aims.fao.org/aos/agrovoc/c_24030 http://aims.fao.org/aos/agrovoc/c_24002 |
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F30 - Génétique et amélioration des plantes Theobroma cacao variation génétique domestication RFLP microsatellite marqueur génétique carte génétique http://aims.fao.org/aos/agrovoc/c_7713 http://aims.fao.org/aos/agrovoc/c_15975 http://aims.fao.org/aos/agrovoc/c_2360 http://aims.fao.org/aos/agrovoc/c_34255 http://aims.fao.org/aos/agrovoc/c_36574 http://aims.fao.org/aos/agrovoc/c_24030 http://aims.fao.org/aos/agrovoc/c_24002 F30 - Génétique et amélioration des plantes Theobroma cacao variation génétique domestication RFLP microsatellite marqueur génétique carte génétique http://aims.fao.org/aos/agrovoc/c_7713 http://aims.fao.org/aos/agrovoc/c_15975 http://aims.fao.org/aos/agrovoc/c_2360 http://aims.fao.org/aos/agrovoc/c_34255 http://aims.fao.org/aos/agrovoc/c_36574 http://aims.fao.org/aos/agrovoc/c_24030 http://aims.fao.org/aos/agrovoc/c_24002 Motamayor, Juan Carlos Risterucci, Ange-Marie Lopez, P.A. Lanaud, Claire The impact of molecular analyses on interpretations concerning the origin and domestication of Theobroma cacao L. |
description |
Cacao (Theobroma cacao L.) was cultivated by the Mayas over two thousand years ago. The type of cacao cultivated by the Mayas constitutes what is called the morphogeographic group Criollo, also known as Theobroma cacao L. subsp. cacao. Criollo cacao was thought to originate in Central America and to have evolved independently from the cacao type from the Amazon basin. Morphological diversity and recent molecular analysis had supported this hypothesis. Cacao populations from the Amazon basin are included in the second morphogeographic group, which is called Forastero and is considered as a different subspecies (sphaerocarpum). In order to gain a better understanding of the origin and the genetic basis of the cacao type cultivated in Central America, a study was carried out, after rigorous sampling, using RFLP and microsatellite markers. In contradiction to previous studies, "wild" and domesticated cacao from Central America was found to be genetically close and closer to Colombian-Ecuadorian individuals than Colombian-Ecuadorian individuals were to Peruvian ones. RFLP and microsatellite analyses also revealed a high level of homozygosity and a significantly low genetic diversity within the Criollo group. The results therefore suggest that the Criollo group probably originated from a few individuals in South America and that humans participated in spreading these individuals in Central America. |
format |
conference_item |
topic_facet |
F30 - Génétique et amélioration des plantes Theobroma cacao variation génétique domestication RFLP microsatellite marqueur génétique carte génétique http://aims.fao.org/aos/agrovoc/c_7713 http://aims.fao.org/aos/agrovoc/c_15975 http://aims.fao.org/aos/agrovoc/c_2360 http://aims.fao.org/aos/agrovoc/c_34255 http://aims.fao.org/aos/agrovoc/c_36574 http://aims.fao.org/aos/agrovoc/c_24030 http://aims.fao.org/aos/agrovoc/c_24002 |
author |
Motamayor, Juan Carlos Risterucci, Ange-Marie Lopez, P.A. Lanaud, Claire |
author_facet |
Motamayor, Juan Carlos Risterucci, Ange-Marie Lopez, P.A. Lanaud, Claire |
author_sort |
Motamayor, Juan Carlos |
title |
The impact of molecular analyses on interpretations concerning the origin and domestication of Theobroma cacao L. |
title_short |
The impact of molecular analyses on interpretations concerning the origin and domestication of Theobroma cacao L. |
title_full |
The impact of molecular analyses on interpretations concerning the origin and domestication of Theobroma cacao L. |
title_fullStr |
The impact of molecular analyses on interpretations concerning the origin and domestication of Theobroma cacao L. |
title_full_unstemmed |
The impact of molecular analyses on interpretations concerning the origin and domestication of Theobroma cacao L. |
title_sort |
impact of molecular analyses on interpretations concerning the origin and domestication of theobroma cacao l. |
publisher |
IPGRI |
url |
http://agritrop.cirad.fr/489717/ |
work_keys_str_mv |
AT motamayorjuancarlos theimpactofmolecularanalysesoninterpretationsconcerningtheoriginanddomesticationoftheobromacacaol AT risterucciangemarie theimpactofmolecularanalysesoninterpretationsconcerningtheoriginanddomesticationoftheobromacacaol AT lopezpa theimpactofmolecularanalysesoninterpretationsconcerningtheoriginanddomesticationoftheobromacacaol AT lanaudclaire theimpactofmolecularanalysesoninterpretationsconcerningtheoriginanddomesticationoftheobromacacaol AT motamayorjuancarlos impactofmolecularanalysesoninterpretationsconcerningtheoriginanddomesticationoftheobromacacaol AT risterucciangemarie impactofmolecularanalysesoninterpretationsconcerningtheoriginanddomesticationoftheobromacacaol AT lopezpa impactofmolecularanalysesoninterpretationsconcerningtheoriginanddomesticationoftheobromacacaol AT lanaudclaire impactofmolecularanalysesoninterpretationsconcerningtheoriginanddomesticationoftheobromacacaol |
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