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

86interest, including early, medium and late maturity, and desirable plantheight. These genotypes could, therefore, be crossed inter se or withother QPM genotypes to develop new varieties for specifi c purposes.ConclusionPlant height, days to physiological maturity, grain yield, days to midsilk,and protein content made the largest contribution to the geneticdivergence among the 63 QPM lines evaluated in this study. Onthe basis of the clustering of the lines for these traits, ten lines wereselected from three clusters for further improvement.ReferencesAlagarswamy, G and S. Chandra, 1998. Pattern analysis of internationalsorghum multi-environment trials for grain yield adaption. Theoretical andApplied Genetics 96: 397–405.Anand, I.J. and D.S. Rawart, 1984. Genetic diversity, combining ability andheterosis in brown mustard. Indian Journal of Genetics 44: 226–234.Anilkumar, T.V., P.M. Salimath, P. Parameshwarappa, M.B. Chetti, S.S. Patil,A.R. Alagawadi and S.J. Patil, 1993. Genetic diversity on the basis ofphotosynthetic and yield related traits in chickpea (Cicer arietinum). IndianJournal of Genetics 53: 279–286.Byerlee, D. and C. Eicher, 1997. Africa’s emerging maize revolution. LynneRienner Publishers, Boulder, Colorado, USA. 421pp.Choudhary, B.R., 1997. Interspecifi c hybridization in genus Brassica. PhDthesis, Rajasthan Agricultural University, Bikaner, India. 185pp.Chungui, Q., G. Wanming, M. Jingyong, V. Xuejung, W. Xu and L. Chunzi,1996. Relationship between genetic divergence and heterosis in sunfl ower.Paper presented at the Sunfl ower Improvement Conference, Beijing,China, June 12–20, 1996, pp131–133.IAR, 1993. Institute for Agricultural Research recommended cultural andmanagement practices of crops based on research in IAR. IAR, Samaru,Zaria, Nigeria.Mahalanobis, P.C., 1936. On the generalized distance in statistics. Proceedingsof the National Institute of Science, India, 2, pp. 49–55.Muppidathi, N., R. Sankarapandian and S. Ragjarathinam, 1995. Geneticdivergence, correlation and path analysis in sunfl ower. Crop Improvement22: 221–234.Quendeba, B., G. Ejeta, W.G. Hanna and K.K. Anand, 1995. Diversity amongAfrica pearl millet land-race populations. Crop Science 35: 919–924.Rao, C.R., 1952. Advanced statistical methods in biometrical research. JohnWiley and Sons, New York, pp. 390–395.Thakur, H.L. and M.A. Zarger, 1989. Heterosis in relation to geneticdivergence and specifi c combining ability in Indian mustard (Brassicajuncea L. Czern and Cross). Journal of Genetics 49: 223–226.