Pyramiding Pita, Pigm, Pi2, and Xa23 to Develop Hybrid Rice with Dual Resistance to Rice Blast and Bacterial Blight.

ABSTRACT: Rice blast and bacterial blight cause severe harm to rice production, and the breeding of resistant varieties guarantees the safety of rice production. Meanwhile, multigene pyramiding breeding based on molecular marker-assisted selection is a crucial approach for rice breeding to combat multiple diseases. This study aimed to develop accurate and efficient PARMS markers for rice blast resistance genes Pita, Pigm, and Pi2, and bacterial blight resistance gene Xa23. A systematic genotyping analysis of the resistant alleles of these 4 genes was performed on 384 major cultivated varieties in production. The results showed that only 5.21% of the varieties harbored more than two resistant alleles simultaneously. Using traditional breeding strategies in combination with

SUBMITTER: Wu S 

PROVIDER: S-EPMC12845295 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature