Demand-Driven Technologies for Sustainable Maize ... - IITA

41STR S6 INB 55 B-1-2, TZEE-W SR BC5 × 1368 STR S6 INB 55 B-2-2, TZEE-W SR BC5 × 1368 STR S7 INB 85) have been developedin the IITA-WECAMAN maize breeding program. There is a needfor extensive testing of the varieties on-farm to ensure wide adoptionby farmers, and hence the desired impact on maize production andproductivity in the savanna ecology of WCA. An advantage shouldbe taken of the promising Striga resistant inbred lines identifi ed inthis study for introgression into the breeding pools and populationsof the national maize breeding programs in order to improve theStriga resistance levels of their germplasm. The results of thisstudy indicate that superior specifi c hybrid combinations could beobtained by crossing inbred lines of different clusters rather thanmatings within clusters, and by selecting parents with high grain yieldand low Striga damage.ReferencesBadu-Apraku, B., M.A.B. Fakorede, M. Ouedraogo and M. Quin. 1999.Strategy for sustainable maize production in West and Central Africa.Proceedings of a Regional Maize Workshop, IITA-Cotonou, Benin Republic,21–25 April 1997. WECAMAN/IITA, Ibadan, Nigeria.Badu-Apraku, B., M.A.B. Fakorede, A. Menkir, A.F. Lum and K. Obeng-Antwi.2006. Multivariate analyses of the genetic diversity of forty-seven Strigaresistant tropical early maize inbred lines. Maydica (51:551–559).Brown-Guedira, G.L., J.A. Thompson, R.L. Nelson and M.L. Warburton. 2000.Evaluation of genetic diversity of soybean introductions and North Americanancestors using RAPD and SSR markers. Crop Sci. 40: 815–823.Hallauer, A.R, and J.B. Miranda, 1988. Quantitative genetics in maize breeding,2 nd edn. Iowa State University Press, Ames, Iowa, USA.IITA, 1992.Sustainable food production in sub-Saharan Africa I. IITA’scontributions. IITA, Ibadan, Nigeria.Johns, M.A., P.W. Skrotch, J. Neinhuis, P. Hinrichsen, G. Bascur and C. Munoz-Schick. 1997. Gene pool classifi cation of common bean landraces fromChile based on RAPD and morphological data. Crop Sci. 37:605–613.Kim, S.K., 1991. Breeding maize for Striga tolerance and the developmentof a fi eld infestation technique. Pp 96-108 in: S.K. Kim (ed.) CombatingStriga in Africa. Proceedings of the International Workshop organized byIITA, ICRISAT and IDRC, Aug. 22–24, 1988, IITA, Ibadan, Nigeria.Kim, S.K. and M.D. Winslow. 1991. Progress in breeding maize for Strigatolerance/resistance at IITA. Pp 494–499 in: J.K. Ransom. L.J. Musselman,A.D. Worsham and C. Parker (eds.) Proceedings of the Fifth InternationalSymposium on Parasitic Weeds, June 24–30, 1991, Nairobi, Kenya.Kim, S.K., 1994. Genetics of maize tolerance of Striga hermonthica. Crop Sci.34: 900–907.