烟草苗期青枯病抗性鉴定及其抗性评价方法的比较

Journal of Yunnan Agricultural University(2014)

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Abstract
采用漂浮池恒温水培法对47个烟草种质苗期进行了青枯病抗性鉴定.按照新国家标准相对病情指数抗性评价体系,苗期恒温水培接种鉴定表现为抗病的品种有2个:Coker176和NC102,表现中抗的种质有11个:RGH51,云烟87,Oxford207,MS云烟87,NC95,K326,YH05,云烟108,NC471,NC71和云烟100.津巴布韦引进的KRK22等7个种质表现为高感,其余种质表现为感病或中感.采用相对病情指数(RDI)和病情指数(DI),与原行业标准(4档抗性划分)和新国家标准(6档抗性划分)等5种抗性评价体系,比较了多个种质鉴定结果的稳定性结果显示,行标-RDI体系和国标-RDI体系鉴定结果的稳定性较高.
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