Yam Breeding in Ghana

CSIR-Crops Research Institute of Ghana is the National Centre of Specialization (NCOs) for Root and Tuber Crops and migrating into a Regional Centre of Excellence (RCOE) in Root and Tuber research in the West African sub-region. Yam is one of the major root and tuber crops of importance in the sub-region and for that matter the NCOS. Even though yams are indigenous to the West African sub-region, with the exception of Dioscorea alata (Asiatic origin), yams are often aptly described as an orphan crop due to the relatively little research effort compared to its significance in the sub-region in particular and the world at large. Breeding of yams therefore can be a challenge due to little literature available on the subject matter. This paper looks at the historic perspective, what can be done presently and projects into future direction of yam breeding in Ghana and the world at large. It also serves as a guide for yam breeding in particular and root and tuber crops in general.

[1]  P. Reddy Yams, Dioscorea spp. , 2015 .

[2]  J. Gonsalves Yam improvement for income and food security in West Africa , 2013 .

[3]  K. Irie,et al.  Ploidy variation and their effects on leaf and stoma traits of water yam (Dioscorea alata L.) collected in Myanmar. , 2010 .

[4]  E. Rodriguez,et al.  Ploidy levels of Dioscorea alata L. germplasm determined by flow cytometry , 2010, Genetic Resources and Crop Evolution.

[5]  R. Asiedu,et al.  Sensory evaluation: The last hurdle in varietal development of yams (Dioscorea rotundata, poir) in Ghana , 2009 .

[6]  A. Némorin,et al.  Revision of ploidy levels of Dioscorea alata polyploid species by cytogenetic and microsatellite segregation analysis , 2009 .

[7]  D. Coursey,et al.  Guinea yams the botany, ethnobotany, use and possible future of yams in West Africa , 1972, Economic Botany.

[8]  N. Scarcelli,et al.  Segregation patterns of isozyme loci and microsatellite markers show the diploidy of African yam Dioscorea rotundata (2n=40) , 2005, Theoretical and Applied Genetics.

[9]  C. Egesi,et al.  Ploidy analysis in water yam, Dioscorea alata L. germplasm , 2002, Euphytica.

[10]  F. Bakry,et al.  Ploidy determination of some yam species (Dioscorea spp.) by flow cytometry and conventional chromosomes counting , 1999, Genetic Resources and Crop Evolution.

[11]  S. K. Hahn,et al.  Origin and phylogeny of Guinea yams as revealed by RFLP analysis of chloroplast DNA and nuclear ribosomal DNA , 1992, Theoretical and Applied Genetics.

[12]  A. Adelusi,et al.  Disease-induced changes in carotenoid content of edible yams (Dioscorea spp.) infected by Botryodiplodia theobromae and Aspergillus niger , 1987, Mycopathologia.

[13]  K. Abraham,et al.  Polyploidy and sterility in relation to sex in Dioscorea alata L. (Dioscoreaceae) , 2004, Genetica.

[14]  P. Vernier,et al.  Participatory assessment and farmers knowledge on yam varieties (D. Rotundata & D. Cayenensis) in Benin , 2002 .

[15]  J. Ramser,et al.  Molecular marker based taxonomy and phylogeny of Guinea yam (Dioscorea rotundata - D. cayenensis). , 1997, Genome.

[16]  K. Hilu,et al.  Polyploidy and the evolution of domesticated plants , 1993 .

[17]  M. Akoroda Yams: Dioscorea spp. , 1993 .

[18]  M. T. Sreekumari,et al.  White yam, Dioscorea rotundata Poir., dwarf type , 1989 .

[19]  P. Ucko,et al.  The origins of yam cultivation. , 1969 .

[20]  D. Coursey Tropical Crop. (Book Reviews: Yams. An Account of the Nature, Origins, Cultivation and Utilisation of the Useful Members of the Dioscoreaceae) , 1967 .

[21]  O. Davies West Africa Before the Europeans: Archaeology & Prehistory , 1967 .