indica and japonica subspecies

Asian cultivated rice (Oryza sativa L. ) mainly includes Indica and Japonica subspecies and the F_1 hybrid between the two subspecies has great potential heterosis, which can be exploited to increase rice yield.
亚洲栽培稻主要分为粳稻和籼稻两个亚种。 水稻籼粳亚种间杂种F_1具有强大的杂种优势,利用籼粳亚种间的杂种优势能够大幅度提高水稻的产量。