Identification of Elite R-Gene Combinations against Blast Disease in Geng Rice Varieties.

ABSTRACT: Rice blast, caused by the Magnaporthe oryzae fungus, is one of the most devastating rice diseases worldwide. Developing resistant varieties by pyramiding different blast resistance (R) genes is an effective approach to control the disease. However, due to complex interactions among R genes and crop genetic backgrounds, different R-gene combinations may have varying effects on resistance. Here, we report the identification of two core R-gene combinations that will benefit the improvement of Geng (Japonica) rice blast resistance. We first evaluated 68 Geng rice cultivars at seedling stage by challenging with 58 M. oryzae isolates. To evaluate panicle blast resistance, we inoculated 190 Geng rice cultivars at boosting stage

SUBMITTER: Gao P 

PROVIDER: S-EPMC9960461 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature