Relations between and inheritance of chlorogenic acid contents in an interspecific cross between Coffea pseudozanguebariae and Coffea liberica var dewevrei
In coffee trees, chlorogenic acids (CGA) mainly includes three classes: the caffeoylquinic acids (CQA), the dicaffeoylquinic acids (diCQA) and the ferulylquinic acids (FQA), each class containing three isomers). An interspecific cross between Coffea pseudozanguebariae (PSE) With low CGA content and C. liberica var dewevrei (DEW) high CGA content was investigated for chlorogenic acid (CGA) contents in F1 and back-cross hybrids. The aim was to analyse CGA inheritance and relationships between CGA classes and isomers. Results constitute a model for the genetic improvement of C. canephora using interspecific crosses with PSE. CGA inheritance: 1. The importance of environmental effects (years + interactions) varies from 22% (5-CQA) to 65% (3,4-diCQA). 2. Additivity is found for 5-CQA, 3,4-diCQA and 4,5-diCQA isomers. 3. Additivity is verified, but after data transformation, for 3-CQA, 3,5-diCQA, and 5-FQA. Relationship between CGA isomers: 1. Relationships between CGA isomers are curvilinear or curvilinea. 2. The shape of the relation explains the use of transformation for additivity test. 3. The presence and the importance of the relation agree with our current knowledge on CGA pathways.
| Main Authors: | , , , , , |
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| Format: | conference_item biblioteca |
| Language: | eng |
| Published: |
ASIC
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| Subjects: | F30 - Génétique et amélioration des plantes, Q04 - Composition des produits alimentaires, |
| Online Access: | http://agritrop.cirad.fr/485908/ |
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