The root-lesion nematode Pratylenchus coffeae first appeared on yams in Taiwan in 2001 and the disease has become an important limiting factor for yams production since that on.

• 摘要根腐线虫为台湾山药主要线虫病害之一，造成山药严重损失，2001年发现以来一直为山药栽培之重要限制因子。