Key words: Correlation, Genetic diversity, Heterosis, Popcorn, Single cross hybrid, Specific combining ability
Maize is among the top three cereal food crops grown and consumed throughout the world. It originated in Mexico and Central America (Weatherwax, 1955). There are different special types of maize grown for commercial purpose viz., sweet corn, popcorn and baby corn. In addition to these pod corn, waxy corn and flour corn are used for household purpose. Among different types of m...
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...(subgenus Potato). Theoretical and Applied Genetics 92: 532-540.
Srdic, J., Miladenovic-Drinic, S., Pajic, Z., Filipovic, M. 2007. Characterization of maize inbred lines based on molecular markers, heterosis and pedigree data. Genetika 39:355-363.
Turner, J.H. 1953. A study of heterosis in upland cotton, combining ability and inbreeding effects. Agronomy Journal 45: 487-490.
Weatherwax, P. 1955. History and origin of corn. In G. F. Spragne (Ed.).Corn and corn improvement, Academic Press. New York pp. 1-16.
Williams, J.G.K., Kubelik, A.R., Livak, K.J., Rafalski, J.A., Tingey, S.V. 1990. DNA polymorphisms amplified by arbitrary primers are useful as genetic markers. Nucleic Acids Research 18: 6531-6535.
Zidani, S., Ferchichi, A., Chaieb, M. 2005. Genomic DNA extraction method from pearl millet (Pennisetum glaucum) leaves. African Journal of Biotechnology 4(8): 862-866.
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