Backcrossing with Marker Assistance to Introduce Broad-Spectrum Bacterial Leaf Blight Resistance in the Malaysian Elite Variety MR297

A significant part of marker-assisted backcross breeding (MABB) is recurrent parent genome recovery (RPGR). The purpose this study was to introduce MABB-mediated resistance genes against numerous bacterial leaf blight (BLB) pathogens. Here, we examine the introgression four Xoo high-yielding Malaysian MR297 lineage Xa21, xa13, xa5, and Xa4 from IRBB60 lineage. To accomplish both foreground background selection, employed polymorphic functional linked markers target simple sequence repeat (SSR) markers. We used 83 475 authorized microsatellite determine proportion RPGR in chosen lines. According data, at BC1F1, BC2F1, BC2F2 are 81.94, 92.30, 95.04%, respectively. Incorporating BLB into newly created lines would result long-lasting comprehensive protection BLB. Therefore, a resistant gene may be introduced population more quickly with MABB than through conventional breeding. All ten tested showed level BLB, three displaying very high levels resistance. Consequently, it recommended that new should produce commercially viable rice varieties.