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 .
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).
caused by the biotrophic fungal pathogen Puccinia graminis f.