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