Nwosu et al
Greener Journal of Agricultural Sciences Vol. 3 (5), pp. 391-395, May 2013.
ISSN: 2276-7770 © 2011 Greener Journals
Manuscript Number: 031913534
Cross-compatibility and F1 Reproductive Potential of Cultivated Cowpea Varieties and a Wild Relative (Subsp. unguiculata var. spontenea)
*1Nwosu D. J., 2Aladele S., 3Adeosun J. O., 4Nwadike C and
5Awa E. N.
1Plant Genetic Resources Unit, National Centre for Genetic Resources and Biotechnology (NACGRAB), Moor Plantation,Ibadan-Nigeria.
2Plant Genetic Resources Unit,National Centre for Genetic Resources and Biotechnology (NACGRAB), Moor Plantation, Ibadan-Nigeria.
3School of Agriculture, Abubakar Tatari Ali Polytechnic, Bauchi-Nigeria.
4Forestry Research Institute of Nigeria, Federal college of Forestry, Jos P.M.B 2019. Jos-Plateau State. Nigeria.
5Faculty of Plant Science and Biotechnology, University of Port Harcourt,Port Harcourt,
Emails and Phones: 2sundayaladele @ yahoo mail. com: 3adeosun_oluwole @ yahoo. com
4chrisnwadike @ ymail. com 5lizzy_uchyl83 @ yahoo. com:
*Corresponding Author’s Email:1olaraich75 @ yahoo mail. com
A hybridization programme that potentially exploits the variability existing in the wild African germplasm of V. unguiculata and cultivated cowpea was performed. Four cultivated cowpea (Achi shuru, Ife Brown, Kanannado and Zebra bean) were crossed to their wild relative subsp. unguiculata var. spontanea to ascertain their cross compatibility, reproductive potential and possible heterosis in the F1 generations. Results show that the cultivated varieties hybridized relatively well with their wild relative with pod set of 40.8% to 46.7%. F1 hybrid plants also showed high heterosis in plant height and number of leaves and produced viable seeds. These results are indications of a good reproductive potential of the hybrids suggesting that the wild relative could be used in hybridization programmes for improvement of cultivated populations.
Keywords: Cowpea, F1 hybrids, Cross-compatibility, Spontanea, Wild.