Reduction in Common Rust Severity Conferred by the Rp1D Gene in Sweet Corn Hybrids Infected by Mixtures of Rp1D-Virulent and Avirulent Puccinia sorghi

• Published in: Plant disease Vol. 91; no. 11; pp. 1484 - 1488
• Main Authors: Pataky, J.K, Campana, M.A
• Format: Journal Article
• Language: English
• Published: United States 01.11.2007
• Subjects: disease resistance; disease severity; genes; genetic resistance; hybrids; hypersensitive response; inoculum density; plant pathogenic fungi; Puccinia sorghi; rust diseases; strain differences; strains; sweetcorn; Zea mays; rust resistance

The Rp1D gene confers a hypersensitive, chlorotic-fleck, resistant reaction to Puccinia sorghi, the casual agent of common rust of corn. About 40% of commercial sweet corn hybrids carry the Rp1D gene. Sine 1999, Rp1D-virulent (D-virulent) isolates of P. sorghi have occurred regularly in populations...