Identification of Bacterial Blight Resistance Genes Introgressed Individuals in the Segregating Population of Rice

Abstract

Rice is the most consumed food crop around the globe. Bacterial blight (BB) caused by Xanthomonas oryzae pv oryzae (Xoo) is the most destructive bacterial disease in rice. The cross CB 87 R × (CB 87 R × IRBB 60) was screened for three BB resistance genes Xa21, xa13 and xa5 with the help of molecular markers revealed 15 individuals found to have resistance genes. The identified individuals with Rf gene were considered as an important criterion in the high yielding background, and the stabilized individuals could be used as genetic stocks for disease resistance breeding program in rice.

Keywords

• hybrid rice
• bacterial blight
• gene introgression
• marker assisted breeding