Twenty wheat cultivars or lines were treated with 1% catechol solution to test their cultivar purities, the results were higher than those tested in field.

• 摘要用1%25邻苯二酚溶液处理20个小麦品种（系）进行纯度检验，并与田间纯度检验进行比较，发现过高地估计了品种纯度；