stem rust


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Related to stem rust: leaf rust

stem rust

[′stem ‚rəst]
(plant pathology)
Any of several fungus diseases, especially of grasses, affecting the stem and marked by black or reddish-brown lesions.
References in periodicals archive ?
Collected stem rust samples were bulked together depending on their area of collection and type of cultivar from which they were collected.
Since then, scientists have developed rust-resistant varieties to boost wheat's immunity to stem rust. But the pathogens are making a comeback.
Stem rust, another rust disease caused by Puccinia graminis f.
The emergence of Ug99 races of the stem rust fungus is a threat to world wheat production.
This being the most damaging disease for wheat although stem rust has been controlled in all the areas in the world other than Eastern Africa in the 1990s, many mutated diseases have risen again.
In the 1950s, the United States eradicated more than 99 percent of its Barbary bushes as one step in drastically curbing major outbreaks of stem rust. While Iran has not spoken of any such plans, there were no reported signs of the fungus in Iran in 2008-2009, possibly because of the droughts.
Several factors have contributed to the rapid spread of the new disease strains, known as stem rust and stripe rust, experts say.
The five-year grant was provided by the United Kingdom's Department of International Development ($15 million) and the Bill & Melinda Gates Foundation ($25 million), and is intended to support efforts to identify new stem rust resistant genes in wheat, improve surveillance, and multiply and distribute rust-resistant wheat seed to farmers and their families.
Summary: Riyadh, Rabi&' Al-Awwal 05, 1432, Feb 08, 2011, SPA -- King Abdulaziz City for Science and Technology (KACST) is participating in a research project conducted by International Atomic Energy Agency (IAEA) entitled "Responding to the Transboundary Threat of Wheat Black Stem Rust", known internationally...
The enemy was stem rust, a fungus that attacks wheat.
A WEBSITE has been launched by the UN Food & Agriculture Organisation to track Ug99, a devastating strain of wheat stem rust disease.
Borlaug set himself to tackling the scourge of the Mexican farmers, a fungus known as stem rust that was devastating the wheat crops and mutating faster than resistant wheat strains could be bred to combat it.