采用远缘杂交,引入异种优良基因,对促进属间、种间基因的交流,充分利用有利基因,以改良栽培稻之抗逆性,具有实际意义.我国在六十年代初有许多科研单位曾以栽培稻与其他不同属、种间杂交做了大量工作,并选育出新品种(系),在生产上推广利用. The use of distant hybridization, the introduction of heterologous fine genes, to promote inter-genomic and interspecific gene exchange, make full use of favorable genes to improve the resistance of cultivated rice has practical significance.China in the early 1960s, many scientific research units have To cultivate rice and other different genus hybrids have done a lot of work, and bred new varieties (lines), in the promotion of the use of production.