Identifying Leaf Rust Resistance in Hard Winter Wheat
Author Information
Author(s): Lakkakula Indira Priyadarshini, Kolmer James A., Sharma Rajat, St. Amand Paul, Bernardo Amy, Bai Guihua, Ibrahim Amir, Bowden Robert L., Carver Brett F., Boehm Jeffrey D. Jr., Aoun Meriem
Primary Institution: Oklahoma State University
Hypothesis
The study aims to identify sources of leaf rust resistance in contemporary US hard winter wheat and to dissect the genetic basis underlying this resistance.
Conclusion
The study identified 59 SNPs associated with leaf rust response, including 20 likely associated with novel resistance loci, which can enhance wheat leaf rust resistance.
Supporting Evidence
- Eight wheat genotypes carry effective broad‐spectrum all‐stage resistance.
- Thirteen known all‐stage leaf rust resistance genes were identified in hard winter wheat (HWW).
- The adult plant leaf rust resistance genes Lr34, Lr46, Lr68, Lr77, and Lr78 were found in HWW.
- The genome‐wide association study identified 59 single nucleotide polymorphisms significantly associated with leaf rust response.
- Twelve wheat genotypes carry a high number of alleles conferring resistance to leaf rust.
Takeaway
Researchers looked at many types of wheat to find out which ones can resist a disease called leaf rust, and they found some that are really good at it.
Methodology
The study used genome-wide association mapping (GWAS) on a panel of 732 elite hard winter wheat genotypes evaluated for leaf rust resistance at both seedling and adult plant stages.
Limitations
The study may not account for all genetic variations and environmental factors affecting leaf rust resistance.
Participant Demographics
The genotypes were obtained from multiple public and private breeding programs across 13 US states.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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