A great deal of research has been carried out to evaluate dry matter accumulation and solar radiation utilization in normal maize genotypes whereas limited information is available on special genotypes such as high oil and high protein maize. In this paper, we made a comparative analysis on biomass production, solar radiation utilization and growth at five different stages before and after flowering in normal (B73 and Mo17) and specialty maize (IHO and IHP) lines. Specialty maize genotypes were from 70th cycle of Illinois Long Term Selection. We used 12 directly-measured traits, 10 energy calculations and 6 time interval computations obtained from measurements in five developmental stages. A nested design was used to compare temporal changes in the observed traits.