聊城地区主栽玉米品种对锈病的抗性分析

Resistance Analysis of Main Corn Varieties to Corn Rust in Liaocheng Area

2015年采取田间自然诱发鉴定方法,分析44个主栽玉米品种对玉米锈病的抗性,明确聊城地区主栽玉米品种对锈病的抗感性差异。结果表明,不同玉米品种对玉米锈病抗性差异明显,易感病品种偏多,为54.54%(高感品种占40.91%,感病品种占13.63%);较抗病品种占36.37%(高抗品种占22.73%,抗病品种占13.64%)。大量易感品种的推广是造成玉米锈病流行的主要原因,应大力推广聊玉23、诺达1号、德单5号、登海605、鲁宁184等高抗品种。

Using the method of natural inducement in field, the resistance of 44 main corn varieties to corn rust was identified in Liaocheng area in 2015. The results showed that different corn varieties were significantly different in resistance to corn rust. Twenty four in 44 varieties were susceptible to corn rust, accounted for 54.54%[the varieties with high sensibility（HS） accounted for 40.91%, with sensibility（S） accounted for 13.63%]. Sixteen in 44 variet-ies were resistant to corn rust, accounted for 36.37%[the varieties with high resistance（HR） accounted for 22.73%,with resistance（R） accounted for 13.64%] The large acreage planting of susceptible varieties is the main cause of corn rust disease epidemic. Liaoyu 23, Nuoda1, Dedan5, Denghai605, Luning184, et al. high resistance varieties should be vigorously promoted. The study made clear the difference of resistance to corn rust of main corn varieties in Liaocheng area.