Inheritance of resistance to wheat streak mosaic virus in wheat line KS06HW79
dc.contributor.author | Curato, John | |
dc.date.accessioned | 2016-08-15T13:16:35Z | |
dc.date.available | 2016-08-15T13:16:35Z | |
dc.date.graduationmonth | May | en_US |
dc.date.issued | 2016-05-01 | en_US |
dc.date.published | 2016 | en_US |
dc.description.abstract | Wheat streak mosaic virus (WSMV) is a disease that causes significant yield losses in wheat (Triticum aestivum L.). Host resistance is the primary approach for control. KS06HW79 is a wheat line with WSMV resistance up to 21°C. To study the inheritance of resistance in KS06HW79, it was crossed with two WSMV-susceptible wheat genotypes, KS020638-M-5 and Brawl CL Plus. Parental lines, F₁, F₂, and check varieties were mechanically inoculated and evaluated for WSMV resistance at 21°C in growth chambers. The segregation pattern in two F₂ populations fit a one-recessive-gene model (1 resistant : 3 susceptible) and a dominant-suppression-epistasis model (3 resistant : 13 susceptible). To determine which model was a better fit, WSMV resistance was evaluated for F₂:₃ families generated from resistant F₂ plants in both crosses. Approximately two thirds of the F₂:₃ families in each cross showed segregation for WSMV resistance, suggesting that the dominant-suppression epistasis model better explained the WSMV resistance in KS06HW79. This model was also supported by two KS06HW79-derived doubled haploid populations, which had a segregation ratio of 1 resistant : 3 susceptible. Therefore, the WSMV resistance in KS06HW79 is likely controlled by two dominant genes, one of which is a suppressor. | en_US |
dc.description.advisor | Guorong Zhang | en_US |
dc.description.advisor | Guihua Bai | |
dc.description.degree | Master of Science | en_US |
dc.description.department | Department of Agronomy | en_US |
dc.description.level | Masters | en_US |
dc.identifier.uri | http://hdl.handle.net/2097/32918 | |
dc.language.iso | en_US | en_US |
dc.publisher | Kansas State University | en |
dc.subject | wheat | en_US |
dc.subject | wheat streak mosaic virus | |
dc.subject | dominant suppression epistasis | |
dc.title | Inheritance of resistance to wheat streak mosaic virus in wheat line KS06HW79 | en_US |
dc.type | Thesis | en_US |