In Holy Quran "a grain which growth seven ears, in every ear a hundred grains". It shows the potential yield that no one reaches yet. Therefore, scientists need to find missing key(s). This gives agronomists, breeders, and farmers a hope of the possibility of developing and devising distinct lines of grain and plant through good agricultural management.
A 100 fertilized flower and matured to be complete grain in each one of seven ears; why no one can reach it yet?