1. Abendroth, L.J., R.W. Elmore, M.J. Boyer, and S.K. Marlay. 2011. Corn growth and development. PMR 1009. Cooperative Extension Service, Ames, Iowa.
2. Ajayi, S.A., and M.A.B. Fakorede. 2000. Physiological maturity effects on seed quality, seedling vigor, and mature plant characteristics of maize in a tropical environment. Seed Science and Technology 28: 301–319.
3. ———. 2001. Physiological maturity and maximum seed quality in tropical maize: The need for a re-definition. Pp 296–304 in B. Badu-Apraku, M.A.B. Fakorede, M. Ouedraogo, and R.J. Carsky (eds) Impact, challenges and prospects of maize research and development in West and Central Africa. Proceedings of a Regional Maize Workshop, IITA-Cotonou, Benin Republic, 4–7 May, 1999. WECAMAN/IITA, Ibadan, Nigeria.
4. Arkin, G.F., and R.L. Monk. 1979. Seedling photosynthetic efficiency of a grain sorghum hybrid and its parents. Crop Science 19: 128–130.
5. Bewley, J.D., and M. Black. 1994. Seeds: Physiology of development and germination. 2nd ed, 392 pp. New York: Plenum Press.