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.
亞洲栽培稻主要分為粳稻和秈稻兩個亞種。 水稻秈粳亞種間雜種F_1具有強(qiáng)大的雜種優(yōu)勢,利用秈粳亞種間的雜種優(yōu)勢能夠大幅度提高水稻的產(chǎn)量。