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麦类品种与种质资源对大麦黄矮病毒GAV的田间抗性鉴定

, PP. 584-588

Keywords: 小麦黄矮病,品种,抗性鉴定,堆测法

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Abstract:

为明确不同小麦品种对大麦黄矮病毒(Barleyyellowdwarfviruses,BYDV)GAV的抗性差异,采用堆测法田间人工接种鉴定了215份小麦品种及种质资源的抗病性.结果表明,不同材料对黄矮病的抗病性存在较大差异,00中13、中4、西农979、临优21号、878和H9020-17-25-6-4的病情指数分别为18.9、9.6、16.3、21.1、21.1和22.6,表现出较好的抗病性;荔高6号、偃展4110、新麦13、豫麦49、徐麦856、金穗1号、中国春和7182的病情指数分别为68.9、55.2、58.5、54.0、56.2、51.5、55.8和53.0,均高于50.0,表现为高感;其余材料病情指数在25.0~50.0之间,表现为感病.此外,红须麦、豫麦34、小冰麦和晋麦47初期表现感病,后期恢复健康,有一定的耐病性.抗病性不同的小麦品种感染GAV后,对小麦产量的影响差异很大,抗病品种如中5产量损失为5.6%,中4产量损失7.6%,耐病品种小冰麦、晋麦47和红须麦的产量损失依次为19.9%、15.2%和18.3%,而感病品种荔高6号产量损失达到47.5%.

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