1. bookVolume 54 (2005): Issue 1-6 (December 2005)
Journal Details
License
Format
Journal
eISSN
2509-8934
First Published
22 Feb 2016
Publication timeframe
1 time per year
Languages
English
access type Open Access

Chromosome Numbers of Four Nigerian Species of Cola Schott. & Endlicher (Sterculiaceae).

Published Online: 19 Oct 2017
Volume & Issue: Volume 54 (2005) - Issue 1-6 (December 2005)
Page range: 42 - 44
Received: 04 Apr 2005
Journal Details
License
Format
Journal
eISSN
2509-8934
First Published
22 Feb 2016
Publication timeframe
1 time per year
Languages
English
Abstract

This paper reports the results of chromosome countings in four wild Cola species (Cola lateritia, C. ballayi, C. verticillata and C. gigantea). Cytological investigation of these species gave a constant mitotic chromosome counts of 2n = 4x = 40 for the first time. The karyotypes were found to consist mostly of metacentric and submetacentric chromosomes. In addition to confirming the chromosome numbers and ploidy levels in these species, the results also reveals high symmetry and homogeneity of the karyotypes with those of the cultivated species (C. nitida and C. acuminata) already reported. The similarity in chromosome morphology between the cultivated and wild species indicate their common origin and suggests the possibility of using these wild species as bridges for gene transfer in Cola breeding programmes involving interspecific hybridization.

Keywords

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.Search in Google Scholar

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.Search in Google Scholar

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: 301-325.10.1111/j.1095-8339.1980.tb01681.xSearch in Google Scholar

JACKSON, R. C. (1973): Chromosome evolution in Haploppapus gracilis: a centric transposition race. Evolution 27: 243-256.Search in Google Scholar

LEVAN, A., K. FREDGA and A. A. SANDBERG (1964): Nomenclature for centromeric position of chromosomes. Hereditas 52: 201-220.10.1111/j.1601-5223.1964.tb01953.xSearch in Google Scholar

MORAKINYO, J. A. (1978): Biosystematics Studies in the genus Cola Schott and Endlicher. M.Sc. dissertation, University of Ife, Nigeria. Search in Google Scholar

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.Search in Google Scholar

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.Search in Google Scholar

OYEWOLE, S. O. (1972): Taxonomic treatment of Urginea altilissima Baker in West Africa. Bio. Soc. Biot. (Zeserie) 49: 168-172.Search in Google Scholar

PURSEGLOVE, J. W. (1968): Tropical Crops. Dicotyledons. The English language Book Society and Longman. 322pp.Search in Google Scholar

Recommended articles from Trend MD

Plan your remote conference with Sciendo