Publications by authors named "J D Franckowiak"
Unlabelled: Spot blotch (SB), a prevalent foliar disease of barley, is caused by the hemibiotrophic fungal pathogen . Predominately occurring in humid growing regions worldwide, SB can result in yield losses of up to 30%. Genetic resistance remains the most effective strategy for disease management; however, most Australian barley cultivars exhibit susceptibility despite the previous identification of major resistance loci.
View Article and Find Full Text PDFBackground: Mutants have had a fundamental impact upon scientific and applied genetics. They have paved the way for the molecular and genomic era, and most of today's crop plants are derived from breeding programs involving mutagenic treatments.
Results: Barley (Hordeum vulgare L.
Article Synopsis
- Leaf rust, caused by the fungus Puccinia hordei, is a major threat to global barley production and existing resistance methods are losing effectiveness due to new virulent strains.
- Researchers have successfully cloned the Rph15 resistance gene from wild barley to enhance resistance against leaf rust, demonstrating that it encodes a specific protein with unique features.
- Further analysis revealed that Rph15 and another resistance gene, Rph16, are likely the same gene, allowing for better strategies in developing barley with durable resistance against leaf rust.
Barley is naturally an inbreeding hermaphrodite plant so that each generation resembles its parental generation. New variation can be introduced by crossing parents that complement each other for desirable or target characteristics but requires human intervention to ensure that all the resulting seeds are hybrids of the two parents. That means that plants selected to be female parents have to be emasculated and are then fertilized with pollen from plants selected to be male parents.
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