Research progress of grain shape genetics in rice

Grain shape controls rice yield. Meanwhile, grain shape is related to rice appearance quality, and an important element determing rice quality. With the developments of modern genetics and genomics related theories and technologies, the genetic researches on grain shape are gradually deepened. Now dozens of QTLs controlling grain shape are cloned. This review summarizes the main progresses of genetic researches on grain shape, points out the major problems and analyzes the prospects.