Much of the food we eat comes from grasses such as rice, wheat, corn, sorghum, and sugarcane. These crops still resemble the wild species from which they were derived. In all grasses the structures that contain the flowers and seeds are called spikelets. In the tribe Andropogoneae, a major group of grasses that cover 17 percent of the earth’s surface, the spikelets come in pairs, one of which bears a seed and one of which doesn’t (although in some species it produces pollen).
Click here for original story, Research reveals infertile spikelets contribute to yield in sorghum and related grasses
Source: Phys.org