摘要： 采用病圃自然感染和温室幼苗接种的方法，鉴定了247份向日葵品种（系）对霜霉病的抗性，测定了感病品种的产量损失和抗病品种的增产效果，筛选出抗病品种39份。在食用向日葵中尚未发现抗病品种,油用向日葵自交系辽1045、汾3893等可作为杂交育种的抗源，龙葵杂1号、汾葵杂5号等杂交种具有多抗（兼抗锈病、耐菌核病）丰产的特性，可在生产上直接利用。

关键词: 向日葵, 霜霉病, 品种, 抗性

Abstract: By the means of natural infection in the disease nursery and whole-seedling immersion (WSI) In the green-house, the resistance of sunflower varieties to downy mildew (Plasmopara holstedii (Farl.) Berl et de Toni)was determined The yield loss of susceptible varieties and the yield increasing effect of resistant varieties were also determined. 39 resistant varieties were screened out. There was no discovery discovery of resistans in edible sunflower.The oil-typed inbred lines, such as Liao 1045 and Fang3893, can be used as antigens of crossbreeding. Some varieties, such as Longkui Za 1, Fengkui Za 5 etc, resist several diseases and have high yield. They can directely be used in production.

Key words: Sunflower, Downy mildew, Varieties, Resistance

中图分类号: 

• S565.501