【摘要】 为明确不同糜子种质抗黑穗病类型和差异，于2022年-2023年采用田间人工接种法在甘肃省兰州市榆中县对32份糜子种质进行了抗黑穗病鉴定；同时以‘陇糜5号’为试验材料，研究播种时间和接菌量对糜子黑穗病发生情况的影响。结果表明，连续两年对黑穗病均表现免疫(IM)的材料仅有1份，为‘HANACKE MANA’,占比3.1%;其余31份材料均表现高感，占比为96.9%。播种时间越早，越容易发生糜子黑穗病。当接种菌土含菌量达0.1%及以上时，糜子种质均能充分发病。该研究结果对规范糜子抗黑穗病鉴定方法，品种合理布局以及为抗病育种部门提供核心抗源具有重要意义。更多还原

【Abstract】 This study aimed to determine the resistance levels to head smut and differences among broomcorn millet germplasms using the artificial inoculation method under field conditions. A total of thirty-two broomcorn millet germplasms were evaluated at Yuzhong county, Lanzhou city, Gansu province from 2022 to 2023. Furthermore, ‘Longmi 5’ was used as the experimental subject to investigate the impact of sowing time and inoculum quantity on the prevalence of head smut in broomcorn millet. The results revealed that only one material, ‘HANACKE MANA’, exhibited immunity to head smut over two consecutive years, representing 3.1% of the tested samples. The remaining 31 materials showed high susceptibility, accounting for 96.9%. The earlier the sowing time, the more favorable the occurrence of broomcorn millet head smut. When exposed to inoculated soil containing 0.1% or more than 0.1% fungal pathogen powder, the broomcorn millet germplasms demonstrated full disease development. These findings offer valuable insights for standardizing the identification technology for resistance of broomcorn millet to head smut, the rational distribution of varieties and the core resistance source for disease resistance breeding department.更多还原