References
- BARONE, A. and F. SACCARDO (1990): Pachytene morphology of cowpea chromosome. P.137-143 In N.Q. Ng and L.M. Monti (eds). Cowpea genetic resources, IITA, Ibadan. 200pp.
- BODARD, M. (1962): Contributions a l’etude systematique sur le Cola en Afrique occidentale. Annales le la faculte des sciences de l’Universite de Dakar, Tome 7: 71-82.
- FADEN, R. B. and Y. SUDAN (1990): Cytotaxonomy of Commeliaceae: chromosome number of some African and Asiatic species. Botanical Journal of the Linnean Society 81: 301-325.
- JACKSON, R. C. (1973): Chromosome evolution in Haploppapus gracilis: a centric transposition race. Evolution 27: 243-256.
- LEVAN, A., K. FREDGA and A. A. SANDBERG (1964): Nomenclature for centromeric position of chromosomes. Hereditas 52: 201-220.
- MORAKINYO, J. A. (1978): Biosystematics Studies in the genus Cola Schott and Endlicher. M.Sc. dissertation, University of Ife, Nigeria.
- MORAKINYO, J. A. (1995): Gene exchange between Cola millenii and Cola nitida: Hybridization and hybrid seed viability. Bioscience Research Communications. Vol. 7 (2), 151-153.
- MORAKINYO, J. A and O. OLORODE (1984): Cytogenetic and Morphological studies on Cola acuminata (P. Beauv.) Schott & Endlicher; Cola nitida (Vent) Schott & Endlicher and the C. acuminata x C. nitida F1 Hybrid. Cafe, Cacao, The. Vol. xxviii (4), 1984.
- OYEWOLE, S. O. (1972): Taxonomic treatment of Urginea altilissima Baker in West Africa. Bio. Soc. Biot. (Zeserie) 49: 168-172.
- PURSEGLOVE, J. W. (1968): Tropical Crops. Dicotyledons. The English language Book Society and Longman. 322pp.