Genetic variability of cocoa from the amazon basin: implications for genetic conservation
Biosci. j. (Online)
; 39: e39020, 2023. ilus, tab
Article
en En
| LILACS
| ID: biblio-1415915
Biblioteca responsable:
BR396.1
ABSTRACT
The cocoa and chocolate production chain involves US$60 billion annually and three million farmers around the world, in an area exceeding nine million hectares. The use of wild germplasm will enable to generate new disease- and pest-resistant cultivars and ability to adapt to changing environments. Here we evaluated 145 cocoa accessions, originated from nine Amazonian basins, based on eight fruit traits. Univariate anova showed significant differences (p<0.05) for all traits. For seven traits, the variance component within basins was higher (81.5%, on average). Therefore, it is recommended that the collection of wild accessions prioritize a larger number of plants from a few populations of the most divergent basins. The multivariate analyses revealed a greater divergence between the Ji-Paraná-RO and Solimões/Amazonas-PA basins (27.69) and a greater similarity between Alien clones-PER and Solimões/Amazonas-AM (0.66) in relation to their populations. They also revealed that the accessions differentiation occurred according to the river basin system. These results allowed elucidate the genetic structure and distribution of cacao populations. In addition, strengthen the importance of collecting and conserving germplasm to preserve genetic resources.
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Asunto(s)Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
LILACS
Asunto principal:
Variación Genética
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Cacao
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Cuencas Hidrográficas
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Ecosistema Amazónico
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Banco de Semillas
Idioma:
En
Revista:
Biosci. j. (Online)
Asunto de la revista:
Agricultura
/
Disciplinas das Cincias Biol¢gicas
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Pesquisa Interdisciplinar
Año:
2023
Tipo del documento:
Article
País de afiliación:
Brasil
Pais de publicación:
Brasil