The exploitation of heterosis was one of few milestones in the revolution of agricultural sciences and technologies leading to big jump in crop improvement in 20th century. Utilization of heterosis is one of the most effective ways to increase yield and improve quality in several major crops, including maize, sorghum and rice. In order to apply heterosis more efficiently, scientists have made every effort for a long time to probe into the genetic basis and the method of prediction for heterosis. The develop...
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