D型杂交稻,是继野败型、冈型不育系以后第三个新型不育系。对于丰富我国杂交稻质源,改变大面积生产单一胞质潜存的遗传脆弱性,增强杂交稻的抗性,延长优良组合的使用年限,提高稻谷产量,定能发挥应有的作用。D型杂交稻是采用籼亚种内品种间杂交培育的雄性不育系,其胞质来源予原产圭亚拉的高秆晚籼良种“Dissi D52/37”(Q.Sativa L.Subsp.indica),与我国早籼品种“矮脚南特号”杂交,F_7代909株系分离的不育株,以此为母本,先后育成意大利B不育 D-type hybrid rice, following wild-type, Okinawa CMS after the third new type of sterile line. It is expected to play an important role in enriching the quality of hybrid rice in China, changing the genetic vulnerability of large-scale production of single cytoplasmic potential, enhancing the resistance of hybrid rice, extending the useful life of fine combinations and increasing the yield of rice. The D-type hybrid rice is a male sterile line that is cross-cultivated with indica subspecies. The cytoplasm of D-type hybrid rice is derived from the high-stalk indica elite “Dissi D52 / 37” (Q.Sativa L. Subsp. indica), crossed with early indica variety “Dantu Nante” in our country, and sterile line F9 was isolated from 909 lines. As a female parent, it was bred in Italy B