小麦持久抗条锈品种的抗性特点及鉴定指标

Characteristics and identification indexes of durable resistant wheat cultivars to stripe rust

对不同小麦抗条锈品种的反应型、严重度、普遍率、病情指数、病程曲线下面积、相对病程曲线下面积及条锈病对穗粒数、有效小穗数、千粒重的影响进行了研究.结果表明,持久抗病品种具有“双低”特点,一是反应型、严重度、普遍率、病情指数和病程曲线下面积等抗性组分值都很低,而且对环境条件不敏感,其中反应型对环境是最稳定的.二是穗粒数、有效小穗数、千粒重及产量的损失率低.以上特点可以作为持久抗病品种的鉴定依据.

It was investigated with different resistance varieties in characteristics and identification indexes of durable resistant in wheat cultivars to stripe rust,the infection type,severity,incidence,disease index,area under disease progress curve,the relative area under disease progress curve as well as the strip rust influence on output factors from 2003 to 2005.The results indicated that durable resistance varieties displayed the lower values of infection type,severity,incidence,the area under disease progres...