
Plants, Journal Year: 2025, Volume and Issue: 14(8), P. 1231 - 1231
Published: April 17, 2025
Powdery mildew, caused by Blumeria graminis f. sp. hordei (Bgh), severely impacts global barley Hordeum vulgare L. (Hv) production. This investigation evaluated Egyptian genotypes to identify novel resistance sources and molecular markers for breeding programs. Phenotypic assessments at the seedling (growth stage, GS 32) adult plant (GS 55–59) stages under controlled field conditions, combined with SSR marker analysis, revealed distinct profiles. Genotypes Giza 123, 125, G8 exhibited strong resistance, 123 displaying Mlo-mediated immunity. Susceptible (Giza 126, G1, G2, G4) showed rapid disease progression (IT4; up 80% severity). Intermediate (G5, G6, G9) suggested quantitative resistance. Simple sequence repeat (SSR) analysis linked EBmac0603 primer 160 bp allele 149 susceptibility. The 185 correlated partial highlighting its utility in marker-assisted selection (MAS). integration of phenotypic data identified as prime candidates breeding, emphasizing need strategies like gene pyramiding or incorporation susceptible lines. study underscores value Egypt’s diversity advancing durable through targeted tools.
Language: Английский