1Division of Genetics, Indian Agricultural Research Institute, New Delhi, 110 012
*Agricultural Research Institute, P.O. Sabour, Dist. Bhagalpur 813 210.
Heterosis manifest was studied for number of grains in a set of inter-varietal crossess of maize. in parental varieties as well as the crosses the mean-number of grains was considerably less than that of ovules present in the ear. Ear length was not correlated with number of grains per ear, per cent grain conversion and 100 grain weight. The investigation indicated the possibility of maximising heterosis for number of grains by identifying parents possessing the highest level of heterotic potential for number of ovules and per cent of grain conversion.
Zea mays, maize, heterosis, grain number
