Comparison of pathogenicity of the Fusarium crown rot (FCR) complex (<Emphasis Type="Italic">F. culmorum</Emphasis>, <Emphasis Type="Italic">F. pseudograminearum</Emphasis> and <Emphasis Type="Italic">F. graminearum)</Emphasis> on hard red spring and durum wheat |
| |
Authors: | Alan T Dyer Robert H Johnston Andrew C Hogg Jeffrey A Johnston |
| |
Institution: | (1) Department of Plant Sciences and Plant Pathology, Montana State University, Bozeman, MT 59717-3150, USA |
| |
Abstract: | Fusarium species involved in the Fusarium crown rot (FCR) complex affect wheat in every stage of development from seedling to grain
fill. This study was designed to compare the aggressiveness of the FCR complex members including F. culmorum, F. pseudograminearum and F. graminearum in causing seedling blight, decreased plant vigour and crown rot. To assess their relative pathogenicity, two hard red spring
wheat cultivars and two durum wheat cultivars were inoculated in the field with five isolates from each of the three species
for two years. Significant differences in patterns of pathogenicity were identified. In particular, F. culmorum caused greater seedling blight while F. pseudograminearum and F. graminearum caused greater crown rot. Greatest yield reductions were caused by F. pseudograminearum. Cultivar differences were identified with respect to seedling disease and late season crown rot. No interactions were identified
between cultivar performance and isolates or species with which they were challenged. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|