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

Tan spot, caused by Pyrenophora tritici-repentis (Ptr), is an economically important disease on both common wheat (Triticum aestivum L.) and durum (T. turgidum L. ssp. durum). Genetics of resistance to tan spot is complicated and needs to be further investigated for breeding cultivars with more complete resistance. The objective of this study was to map and characterize genetic resistance in two wheat bi-parental popuations. In Louise × Penawawa population, four quantative trait loci (QTL) were identified and the major race-nonspecific QTL, designated as QTs.zhl-3BL, was shown to have epistatis and additive effect on Ptr ToxA-Tsn1, Ptr ToxC-Tsc1 interactions, respectively. Nine QTL were identified in the Lebsock × PI 94749 population with three likely being novel. This work improves our understanding of genetic resistance to tan spot and provides important tools for breeding resistant cultivars.

Rights

NDSU policy 190.6.2

Rights Link

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

Handle Identifier

https://hdl.handle.net/10365/27872

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