小麦黄花叶病对镇麦系列品种致病力研究

The Pathogenicity of Wheat Yellow Mosaic Virus to Zhenmai Varieties

测定了来源苏州、江宁、兴化、宜兴和六合共五个地区的小麦黄花叶病病土对镇麦5号、6号、镇麦168、镇麦8号和镇麦9号等镇麦系列品种的致病性。结果表明:镇麦系列品种在不同的病土中发病程度不同;同一品种,对有的地区病土的小麦黄花叶病病毒表现为抗性,而对其他来源的黄花叶病病毒表现感病,不同来源的小麦黄花叶病毒和品种间存在互作效应。建议在小麦新品种审定时,在对黄花叶病的抗性进行鉴定的过程中,考虑品种在不同病土中的发病差异。

Diseased soil of wheat yellow mosaic virus from different counties is examined with 5 differential Zhenmai varieties. The results show that the pathogenicity of WYMV has signifi cant regional differences. There is an interaction between pathogenicity of WYMV and resis tance of different wheat varieties. And it is advised that pathogenicity difference among differ ent regional sources should be considered for new variety certification.