摘要： 采用复交的方法，打破一些不利的连锁，把优质、丰产、抗旱、耐盐和强恢复基因聚集于一个品种之中，育成了适于水栽、旱种和做恢复系的多功能粳稻品种天津1244，并在天津、河南、山东等省市大面积试种成功。春播旱种比对照增产14.5%，麦后旱种比对照增产23.6%，做恢复系子一代结实率80.9-93.6%，比秀优57增产5-16.5%。

关键词: 粳稻, 恢复系, 复合杂交, 育种

Abstract: Having adopted the double crossing method to break up some linkages of unfavorable genes and gathered the good quality,high yield,dry resistance,saltendurance and strong restoring gene,had been bred a keng rice variety Tianjin 1244 which would adapt to water culture,dry culture and be utilized as a restoring line.This variety had been trial cultivated successfully in Tianjin,Henan,Shandong etc.Its grain yield had increased by 14.5%,23.6% under spring dry culture aad after wheat dry culture conditions,respectively.Its F1 setting percentage was 80.9-93.6% while used as restoring line and grain yield increased by 5-16.5% than check variety Xiuyou 57.

Key words: Keng rice, Restoring line, Breeding, Multiple cross