Date of Award

2015

Publisher

North Dakota State University

Document Type

Thesis

Degree Awarded

Master of Science (MS)

Program

Plant Pathology

Department

Plant Pathology

College

Agriculture, Food Systems and Natural Resources

Faculty Advisor

Liu, Zhaohui

Description

Bacterial leaf streak (BLS) of wheat, caused by Xanthomonas translucens pv. undulosa, is an important disease of wheat worldwide. Use of resistant cultivars is the most preferred way of managing BLS. The objective of this research was to identify highly resistant wheat germplasm and map BLS resistance genes. Two collections of wheat germplasm, including triticale and spring wheat, were evaluated for their reactions to BLS. A wide range of reactions from highly resistant to highly susceptible were observed for both collections. Five triticale accessions and twenty-four spring wheat genotypes with high level of resistance to BLS were identified. Genome wide association studies using the spring wheat collection revealed seven quantitative trait loci on chromosomes 1A, 2B, 3B, 5A, 5B, 6A, and 7A significantly associated with BLS resistance. The identified resistant lines and molecular markers have a potential to be utilized in the breeding programs aiming to improve BLS resistance.

Rights

NDSU policy 190.6.2

Rights Link

https://www.ndsu.edu/fileadmin/policy/190.pdf

Handle Identifier

https://hdl.handle.net/10365/27696

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