Abstract
Breeding of the allogamous Coffea canephora species in Côte d'Ivoire is based, from 1984 onward, on a reciprocal recurrent selection scheme exploiting the good performance of crosses between two genetically distinct populations (‘Guinean’ and ‘Congolese’). Results are presented here on intergroup cross progenies evaluated on individual plant basis over a six year period in three fully randomized trials planted in 1985 and 1986. Yields of the bi-parental crosses varied from 16 to 1407% of the mean of the two commercial clonal cultivars and the most productive crosses were also the most vigourous. Selection of individual trees and cross progenies, based on a combined individual-family index, was carried out for high yield, good vigour of young plants and moderate canopy diameter of adult trees. Expected genetic gains, as estimated in relation to the mean of all crosses, for selection of 5% of the best trees, were high for yield (over 60%), moderate for young plant vigour (14 to 18%), and, as intended, low for canopy diameter. In addition, selection by independent culling for leaf rust resistance and bean weight was carried out. As a result, 6 promising crosses with yield similar or higher than those of the control cultivars, were selected as candidates for commercial use, as well as 65 individual trees, within 19 different crosses. Expected genetic gain for yield for these selected trees is about 60% compared to the average yield of the most productive control clone. Continuation of the programme is discussed, with specific attention to further progress expected for quality traits.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Baker, R.J., 1986. Selection indices in plant breeding. CRC Press, Boca Raton, USA.
Baradat, P. & T. Labbé, 1995. OPEP. Un logiciel intégré pour l'amélioration des plantes pérennes. In: CIRAD-CP (Ed.), Traitements Statistiques des Essais de Sélection. Séminaire de Biométrie et Génétique Quantitative, pp. 303–330. Les colloques du CIRAD, Montpellier, France.
Berthaud, J., 1986. Propositions pour une nouvelle stratégie d'amélioration des caféiers de l'espèce C. canephora, basée sur les résultats de l'analyse des populations sylvestres. In: 11th Int Colloquium on Coffee ASIC, Lomé (Togo), pp. 445–452. ASIC, Paris, France.
Bouharmont, P. & J. Awemo, 1980. La sélection végétative du caféier Robusta au Cameroun. Deuxième partie. Diffusion du matériel végétal. Café-Cacao-Thé 24: 3–18.
Capot, J., 1977. L'amélioration du caféier Robusta en Côte d'Ivoire. Café-Cacao-Thé 21: 233–244.
Charrier, A. & J. Berthaud, 1988. Principles and methods in coffee plant breeding: Coffea canephora Pierre. In: R.J. Clarke & R. Macrae (Eds.), Coffee, Vol. 4: Agronomy, pp. 167–197. Elsevier Appl Sci, London, UK.
Cramer, P.J.S., 1957. A review of literature of coffee research in Indonesia. F.L. Wellman, Turialba, Costa Rica, 262 p.
Falconer, D.S., 1989. Introduction to quantitative genetics. Longman, New York, USA, 438 p.
Ferwerda, F.P., 1969. Breeding of Coffea canephora. In: F.P. Ferwerda & F. Wit (Eds.), Outlines of Perennial Crop Breeding in the Tropics, pp. 222–235. H. Veeman & N.V. Zonen, Wageningen, The Netherlands.
Gallais, A., 1989. Thèorie de la sèlection en amèlioration des plantes. Masson, Paris (FRA), 588 pp.
Hemmerle, W.J. & H.O. Hartley, 1973. Computing maximum likelihood estimates for the mixed AOV model using the W-transformation. Technometrics 15: 819–831.
Lebart, L., A. Morineau & J.P. Fénelon, 1979. Théorie des probabilités et applications statistiques. Dunod, Paris, France.
Leroy, T. & A. Charrier, 1990. Mise en place d'un programme de sélection récurrente réciproque chez Coffea canephora Pierre. In: 13th Int Colloquium on Coffee ASIC, Paipa, Colombia, pp. 457–465. ASIC, Paris, France.
Leroy, T., C. Montagnon, A. Charrier & A.B. Eskes, 1993. Reciprocal recurrent selection applied to Coffea canephora Pierre in Côte d'Ivoire. I. Characterization and evaluation of breeding populations and value of intergroup hybrids. Euphytica 67: 113–125.
Leroy, T., C. Montagnon, C. Cilas, A. Charrier & A.B. Eskes, 1994. Reciprocal recurrent selection applied to Coffea canephora Pierre in Côte d'Ivoire. II. Estimation of genetic parameters. Euphytica 74: 121–128.
Leroy, T., J. Perriot, A.B. Eskes, B. Guyot & C. Montagnon, 1992. Qualités technologiques et organoleptiques de quelques clones de Coffea canephora en Côte d'Ivoire. In: 14th Int Colloquium on Coffee ASIC, San Francisco, USA, pp. 438–443. ASIC, Paris, France.
Montagnon, C., T. Leroy, I. Kebe & A.B. Eskes, 1994. Seriousness of coffee leaf rust and factors involved in Coffea canephora field resistance in the Côte d'Ivoire. Café-Cacao-Thé 38: 103–112.
Moschetto, D., C. Montagnon, B. Guyot, J.J. Perriot, T. Leroy & A.B. Eskes, 1996. Studies on the effect of genotype on cup quality of Coffea canephora. Tropical Sci 36: 18–31.
Ravohitrarivo, C.P., 1980. Etude de la variabilité des descendances et des problèmes liés à l'amélioration des caféiers cultivés diploïdes. Thèse de Doctorat de 3ème cycle, University of Madagascar.
Searle, S.R., 1971. Linear models. Wiley series in probability and mathematical statistics. John Wiley & Sons, New York, USA.
Snedecor, G.W. & W.G. Cochran, 1967. Statistical methods. Iowa State University Press, Ames, Iowa, USA.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Leroy, T., Montagnon, C., Cilas, C. et al. Reciprocal recurrent selection applied to Coffea canephora Pierre. III. Genetic gains and results of first cycle intergroup crosses. Euphytica 95, 347–354 (1997). https://doi.org/10.1023/A:1003074716379
Issue Date:
DOI: https://doi.org/10.1023/A:1003074716379