Resistance Evaluation of Cereal Crops to Heterodera avenae in Gansu Province
Cereal cyst nematodes(Heterodera avenae)is an important nematode in cereal crop production.In order to screen the germplasm resources of wheat and oat resistant to cereal cyst nematodes,the population of Gansu province cereal cyst nematodes was selected as experiment object,and the resistance of oat and wheat varieties was analyzed by measuring the number of white female and sporocysts per plant by indoor inoculation method.The results showed that there were no immune varieties in the oat varieties,1 high resistant variety(Longyan 3)and 12 medium resistant varietieswere detected.Similarly,there were no immune varieties in the wheat varieties,and 7 varieties showed moderate resistance,including Dingfeng 12,Xishan 3 and Wuchun 8,etc.The high resistance oat cultivar Longyan 3 can be used as the disease-resistant parent to breed and select excellent varieties with persistent resistance to cereal cyst nematodes.
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