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Stem rust, also known as cereal rust, black rust, [1] [2] red rust or red dust, [3] is caused by the fungus Puccinia graminis, which causes significant disease in cereal crops. Crop species that are affected by the disease include bread wheat, durum wheat, barley and triticale. [1] These diseases have affected cereal farming throughout history.
Ug99 is a lineage of wheat stem rust (Puccinia graminis f. sp. tritici), which is present in wheat fields in several countries in Africa and the Middle East and is predicted to spread rapidly through these regions and possibly further afield, potentially causing a wheat production disaster that would affect food security worldwide. [1]
The Puccinia species causing wheat leaf rust has been called by at least six different names since 1882, when G. Winter (1882) described the Puccinia rubigo-vera. [5] During this time, wheat leaf rust was interpreted as a specialized form of P. rubigo-vera. Later, Eriksson and Henning (1894) classified the fungi as P. dispersa f.sp. tritici.
P. graminis (stem rust of wheat and Kentucky bluegrass, or black rust of cereals); primary hosts include: Kentucky bluegrass, barley, and wheat; Common barberry is the alternate host. Heteroecious and macrocyclic; P. hemerocallidis (daylily rust); daylily is primary host; Patrinia sp is alternate host. Heteroecious and macrocyclic
Wheat rusts include three types of Pucciniae: P. triticina , wheat leaf rust , leaf rust, wheat brown rust, or brown rust P. graminis , stem rust , wheat stem rust, barley stem rust, or black rust
Stem rust = black rust Puccinia graminis. Puccinia graminis f.sp. tritici (Ug99) Storage molds Aspergillus spp. Penicillium spp. and others; Stripe rust = yellow rust Puccinia striiformis; Uredo glumarum [anamorph] Take-all Gaeumannomyces graminis var. tritici; Gaeumannomyces graminis var. avenae; Tan spot = yellow leaf spot, red smudge ...
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Wheat Diseases and Pests: A Guide for Field Identification Excellent color guide from CIMMYT; USDA Cereal Disease Laboratory Many information resources; Identifying and Managing Wheat Rusts, Kansas State University; CropMonitor - UK Resource for in-season wheat disease control Excellent tool for agronomists and growers; Millere, Marta (2020-04-07).