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The use of rust resistant plant varieties Crop rotation can break the disease cycle because many rusts are host specific and do not persist long without their host. Inspection of imported plants and cuttings for symptoms.
Hemileia vastatrix is a multicellular basidiomycete fungus of the order Pucciniales (previously also known as Uredinales) that causes coffee leaf rust (CLR), a disease affecting the coffee plant. Coffee serves as the obligate host of coffee rust, that is, the rust must have access to and come into physical contact with coffee ( Coffea sp. ) in ...
Plant breeders emphasize selection and development of disease-resistant plant lines. Plant diseases can also be partially controlled by use of pesticides and by cultivation practices such as crop rotation , tillage, planting density, disease-free seeds and cleaning of equipment, but plant varieties with inherent (genetically determined) disease ...
Numerous single genes for leaf rust resistance have since been identified. Leaf rust resistance gene is an effective adult-plant resistance gene that increases resistance of plants against P. recondita f.sp. tritici (UVPrt2 or UVPrt13) infections, especially when combined with genes Lr13 and gene Lr34 (Kloppers & Pretorius, 1997 [3]).
The stem rust fungus attacks the parts of the plant that are above ground. Spores that land on green wheat plants form a pustule that invades the outer layers of the stalk. [7] Infected plants produce fewer tillers and set fewer seed, and in cases of severe infection the plant may die. Infection can reduce what is an apparently healthy crop ...
The means of resistance in rust-resistant five-needle pine varieties involve various mechanisms, such as abortion of infected leaves and slow development of canker symptoms. [7] It is likely that varieties exhibiting the latter mechanism act against the pathogen's ability to modify cell walls and avoid plant recognition. [5]
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