WebApr 10, 2024 · Chrysanthemum white rust, caused by Puccinia horiana Henn., is a major disease in chrysanthemum fields and greenhouses. Puccinia horiana is an autoecious, microcyclic rust fungus that produces basidiospores, which arise from germinating teliospores embedded in the abaxial leaf surface. WebChrysanthemum white rust, caused by Puccinia horiana, is a true rust that is regulated by a federal quarantine. The disease has been seen only rarely in the Northeast, and must …
USDA APHIS Chrysanthemum White Rust
WebMar 10, 2024 · Chrysanthemum White Rust (CWR) caused by Puccinia horiana Henn. is a major disease in the production process of chrysanthemum, which is widely spread all over the world and can be called "cancer" of chrysanthemum. WebSeverely infected plants are weakened and fail to bloom properly. A white rust caused by Puccinia horiana produces yellow spots on the upper leaf surface and tan pustules that turn white with spore production on the … flower arm tattoo drawing
Resistance of Chrysanthemum Cultivars to White Rust
WebApr 27, 2024 · Introduction. Chrysanthemum (Chrysanthemum morifolium) originated in China and is one of 10 flowers traditionally grown there.This plant is an important ornamental flower with considerable economic value globally (Li et al., 2015; Xin et al., 2024).Chrysanthemum white rust (CWR) is an epidemic disease caused by the fungus … WebOct 1, 2024 · Chrysanthemum white rust caused by Puccinia horiana Henn. is a disease of economic importance worldwide. Forty-nine chrysanthemum genotypes were … WebMay 17, 2024 · Rust fungi are generally considered low-risk pathogens in terms of resistance to fungicides. However, Puccinia horiana, which causes white rust in chrysanthemum, has developed resistance to various fungicides via mutations in genes encoding the target proteins of fungicides. greek life composites