wheat rust Articles
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Genetic analysis of slow-rusting resistance to leaf rust in durum wheat
Leaf rust (caused by Puccinia triticina Eriks.) is a widespread disease of wheat (Triticum spp.) that can be controlled effectively through the use of genetic resistance. Little is known about the slow-rusting type of resistance to leaf rust in durum wheat [Triticum turgidum L. ssp. durum (Desf.) Husn.]. The genetic basis of slow-rusting resistance was investigated in eight International Maize ...
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Linkage maps of wheat stripe rust resistance genes Yr5 and Yr15 for use in marker-assisted selection
Stripe rust (caused by Puccinia striiformis Westend. f. sp. tritici Eriks.) is a serious disease of wheat (Triticum aestivum L.). Resistance genes Yr5 and Yr15 are the only known all-stage resistance genes that defeat all stripe rust races currently found in the United States. Previously mapped markers for these genes, however, show limited polymorphism across diverse genotypes and/or map at a ...
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Molecular mapping of wheat leaf rust resistance gene Lr42
Leaf rust, caused by Puccinia triticina Eriks., is an important foliar disease of wheat (Triticum aestivum L.) worldwide. Leaf rust resistance gene Lr42 from Aegilops tauschii Coss. has been used as a source of rust resistance in breeding programs. To identify molecular markers closely linked to Lr42, a segregating population of near-isogenic lines contrasting for the presence of Lr42 was ...
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Spring wheat and durum yield and disease responses to copper fertilization of mineral soils
Copper deficiency has been linked to the incidence of a number of wheat diseases. Canadian research on mineral soils has suggested that low Cu availability, as indicated in a DTPA extraction soil test, combined with low soil organic C and coarse textures may also result in Cu deficiency of cereals. The objective of this study was to determine the yield responses of spring wheat (Triticum aestivum ...
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Transfer of leaf rust and stripe rust resistance genes Lr62 and Yr42 from Aegilops neglecta Req. Ex Bertol. to common wheat
Continued genetic control of the cereal rusts depends on the availability of effective resistance genes. The wild relatives of wheat (Triticum aestivum L.) constitute a source of such genes. Wheat leaf rust (Puccinia triticina Eriks.) resistant Aegilops neglecta accession 155 was crossed with ‘Chinese Spring’. Resistant progeny were initially backcrossed to Chinese Spring and later to Chinese ...
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Evaluation and characterization of seedling resistances to stem rust ug99 races in wheat–alien species derivatives
Stem rust (caused by Puccinia graminis Pers.:Pers. f. sp. tritici Eriks. & E. Henn.), a devastating disease of wheat (Triticum aestivum L.), was effectively controlled worldwide for the past 50 yr by deployment of stem rust resistance (Sr) genes in wheat cultivars. However, a new stem rust race, TTKSK (known as Ug99 or TTKS) that emerged in eastern Africa, is a cause of concern because it has ...
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Fungal diseases are on the rise. Is environmental change to blame?
Scientists and physicians are looking for clues to a worrying increase in fungal infections and exploring ways to reduce the threat. Fungi are everywhere — from the mushrooms that decompose fallen logs in the forest, to the mold that grows in your bathtub, to the microscopic fungal cells that reside naturally on your skin. Scientists estimate there are 1.5 million species of fungi on the ...
By Ensia
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