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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Inheritance and relationship between key agronomic and quality traits in an interspecific cross between Coffea pseudozanguebariae Bridson and C. canephora Pierre
Tree Genetics and Genomes, Volume 8, No. 5, Year 2012
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Description
The inheritance and relationships between four traits of agronomic and quality interest-fructification time, caffeine, and heteroside contents and 100-bean weight-were analyzed in the first backcross hybrids derived from an interspecific cross between Coffea pseudozanguebariae and Coffea canephora. We showed that short vs. long fructification time was governed by one major gene with two co-dominant alleles ft1 and ft2. Absence vs. presence of both caffeine and heteroside was also controlled by one major gene. The allele responsible for the presence of caffeine (caf2) dominated over the absence one (caf1) whereas both alleles controlling heteroside, het1 and het2, were co-dominant. The fructification time and the heteroside content were additive while the caffeine content seemed multiplicative. The 100-bean weight was additive and under a polygenic control. The two genes ft and caf were linked, separated by 30.8 cM, and were independent from the het gene. The relationships between the four traits were not strong enough, except between 100-bean weight and fructification time (r = 0.43) or caffeine content (r = 0.41). Recombination occurred between the genes controlling the four traits suggesting that new introgressed Robusta varieties, characterized by short, medium, or long fructification time depending on demand, bigger seeds with low or no caffeine content, and being heteroside-free, could be produced. © 2012 Springer-Verlag.
Authors & Co-Authors
Akaffou, Doffou Sélastique
Cote D'ivoire, Abidjan
Université Abobo-adjamé
Hamon, Perla
France, Montpellier
Ird Centre de Montpellier
Doulbeau, Sylvie
France, Montpellier
Ird Centre de Montpellier
Keli, Jules
Cote D'ivoire, Abidjan
Centre National de Recherche Agronomique Abidjan
Legnaté, Hyacinthe N.
Cote D'ivoire, Abidjan
Centre National de Recherche Agronomique Abidjan
Campa, Claudine
France, Montpellier
Ird Centre de Montpellier
Hamon, Serge
France, Montpellier
Ird Centre de Montpellier
De Kochko, Alexandre
France, Montpellier
Ird Centre de Montpellier
Zoro Bi, Irié Arséne
Cote D'ivoire, Abidjan
Université Abobo-adjamé
Statistics
Citations: 9
Authors: 9
Affiliations: 3
Identifiers
Doi:
10.1007/s11295-012-0503-x
ISSN:
16142942
Research Areas
Genetics And Genomics