Abstract
Plant morphology and metaphase I chromosome association of six hybrids betweenC. canephora (subsectionErythrocoffea of sectionEucoffea) andC. liberica (subsectionParacoffea of sectionEucoffea) are described. Between plants, variation in the expression of parental characters was observed and attributed to heterozygosity especially in the liberica parent. Bivalent frequency was high, but comparable to that of earlier reports. Trivalents and quadrivalents, indicating structural hybridity, were observed here for the first time in such hybrids. In spite of their classification in different subsections and apparent hybridization barrier, the two species have considerable chromosomal homology.
Similar content being viewed by others
References
Carvalho A. & L. C. Monaco (1967). Genetic relationships of selectedCoffea species.Ciencia & Cultura 19: 151–165.
Chinnappa C. C. (1968). Interspecific hybrids ofCoffea canephora andC. arabica.Curr. Sci. 37: 676–677.
Cramer P. J. S. (1957). A review of literature of coffee research in Indonesia. SIC Editorial, IICA, Turrialba, Costa Rica. 262 pp.
Narasimhaswamy R. L. & S. Vishveshwara (1961). Reports on hybrids between some diploid species ofCoffea L.Indian Coffee 25: 104–109.
Narasimhaswamy R. L. & S. Vishveshwara (1967). Progress report on hybrids between diploid species ofCoffea L.Turrialba 17: 11–17.
Sybenga J. (1960). Genetics and cytology of coffee.Bibliographia Genetica 19: 217–316.
Vishveshwara S. (1963). A preliminary report on meiotic irregularities in diploids and diploid interspecific hybrids in coffee.Caryologia 16: 535–539.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Chinnappa, C.C. Interspecific hybrids ofCoffea canephora andC. liberica . Genetica 41, 141–146 (1970). https://doi.org/10.1007/BF00958900
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00958900