Tripling the Number of Grains in Sorghum (IMAGE) Cold Spring Harbor Laboratory Caption Sorghum grains are produced in clusters of flowers that develop from an elaborately branched structure at the top of the plant called a panicle. Each panicle can produce hundreds of flowers. There are two types of flowers. In the plant one finds in the wild (left), only one of these, the sessile spikelet (SS), is fertile. The other type, pedicellate spikelets (PS), do not make seeds. In a modified version of the plant (right) both sessile and pedicellate spikelets produce seeds, tripling each plants grain number. Credit Ware Lab, CSHL Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.