The esterase isozymes of 10 isolates from different Alternaria species and Alternaria brassicae have been compared by IF PAGE and TL scanning technique.

• 对链格孢菌（Alternaria）不同种和芸苔链格孢菌（Alternariabrasicae）不同菌系的10个菌株的酯酶同工酶进行聚丙烯酰胺凝胶电泳（IF－PAGE）和TL紫外扫描分析。