stem rust


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Related to stem rust: leaf rust

stem rust

n.
1. Any of various rust diseases affecting the stem of a plant, especially a cereal such as wheat.
2. The fungus causing such a disease.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

stem′ rust`


n.
1. any of several fungal diseases of plant stems, esp. a disease of wheat and other grasses characterized by pustules of red, then black spores.
2. any fungus causing this.
[1915–20]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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Among these varieties, Kenya Wren, Kenya Tai, Kenya Sunbird, Kenya Kingbird and Eagle are known to be moderately resistant to stem rust, which is a major wheat disease across East Africa.
Other topics of the 28 contributions include the barberry eradication program in Minnesota for stem rust control, plant genome editing for disease resistance, the endosymbionts of plant-parasitic nematodes, and a systems framework to address grand challenges in plant pathology.
The Kenya Agricultural and Livestock Research Organisation, Food Crops Research Centre in Njoro states that besides the unstable weather conditions, wheat production in Kenya is constrained by widespread use of recycled seed by farmers, and the resultant prevalence of the wheat stem rust (Ug99) diseases such as wheat stem rust and while subdivision of land hinders efficient wheat farming.
This creates favorable condition for the carryover of stem rust urediospores from one season to another and leads to the development of epidemics in wheat growing areas [5].
University of California, Davis, researchers identified a gene that enables resistance to a new devastating strain of stem rust, a fungal disease that is hampering wheat production throughout Africa and Asia and threatening food security worldwide.
Understanding cereal rust diseases, particularly wheat stem rust and wheat leaf rust, has driven his career.
Many diseases are mostly seen in barley likes leaf rust, stem rust and loose smut diseases.
They were also medium-tall and late maturing ones, which were susceptible to septoria and leaf rust under the natural and/or artificial epidemic conditions of Turkey, USA and Ukraine and stem rust under the natural and/or artificial epidemic conditions of Turkey and Kenya.
The modified Cobb's scale (Peterson et al., 1948) was used to assess the wheat genotypes for adult plant stem rust resistance based on the percentage of the leaf area covered with stem rust pustules (Table 2).
Race identification, which began approximately 100 years ago, was traditionally performed only on wheat hosts of differential genotypes, including Stakman's set (Stakman and Premeisel, 1917) or Stakman's set plus supplementary hosts, or in recent years 5 sets of different known stem rust resistance gene (Sr) line hosts (Roelfs and Martens, 1988; Jin et al., 2009; Cao and Chen, 2010).