小麦品种对禾谷孢囊线虫(Heterodera avenae)江苏沛县群体的抗性鉴定

Evaluation of the Resistance of Wheat Cultivars to Peixian Population of Heterodera avenae from Jiangsu Province,China

为了筛选对禾谷孢囊线虫病(Cereal cyst nernatode,CCN)具有抗性的小麦品种,采用室内二龄幼虫接种法、网室卵接种法和田间病圃法测定了收集自5个省份的40个小麦品种对小麦孢囊线虫江苏沛县群体的抗性。室内二龄幼虫接种测定结果表明,供试材料中无免疫品种,华麦1号、温粮58和豫麦66-18系表现为高抗,扬麦13和徐麦7086表现为中抗,烟农5158表现最感病,平均单株白雌虫数达104.7个;田间病圃测定表明,上述5个品种仅华麦1号表现为抗病。网室卵接种法测定结果与室内二龄幼虫接种法及田间病圃法测定结果差异较大,显示该方法不适用小麦品种的CCN抗性鉴定。

In order to screen the resistant wheat cultivars to cereal cyst nematode（Heterodera avenae）,40 cultivars from 5 provinces were evaluated by two test methods of second juvenile inoculation under greenhouse and eggs inoculation under natural conditions and one field trial,with the nematode population from Peixian,Jiangsu province,China.The greenhouse test with juvenile inoculation revealed no cultivar was immune to H.avenae.However,cultivars Huamai 1,Wenliang 58 and Yumai 66-18 were highly resistant,Yangmai 13 and Xumai 7086 were moderately resistant.Yannong 5158 was the most susceptible cultivar with 104.7 white females per plant in average.In field trial,only Huamai 1 of the resistant cultivars above mentioned was evaluated as resistant.The sustainable test results demonstrated that Huamai 1 could be used as the prospective resistant cultivar for wheat cultivation in CCN heavily infested areas and as resistant resource for plant breeding.The resistance results evaluated by eggs inoculation test were more variable when compared with those from juvenile test and field trial,therefore,it was not suitable for the evaluation of wheat cultivars resistance to CCN.