Rapid breeding method for ornamental rice variety with long growth duration

The invention relates to the technical field of new plant variety breeding, in particular to a rapid breeding method for an ornamental rice variety with a long growth duration. Two characters of longgrowth duration and leaf color of rice are organically combined into a variety, and the ornamental rice variety with stable agronomic characters and leaf color in the long growth duration is cultivated. The rapid breeding method particularly comprises the steps that a long-growth-duration variety with the same genetic background and a target leaf color variety are selected to be hybridized to obtain F0 seeds, seeds on an F1 plant are planted and harvested to obtain F2 seeds, the F2 seeds are sowed, 100-500 plants of seedlings with the leaf color are selected to be transplanted, in maturity, asingle plant with an extremely significant extended heading period is selected, seeds are harvested by dividing the plants, and the harvested seeds are the ornamental rice variety with the stable agronomic characters and long