用聚丙烯酰胺凝胶电泳技术对碱茅属的５个种进行过氧化物酶同工酶及酯酶同工酶的研究结果表明，５个种的过氧化物酶同工酶的酶谱差异很小，但酯酶同工酶的酶谱差异较大，５个种中的碱茅与微药碱茅酶谱相同，朝鲜碱茅与热河碱茅酶谱极为相近，而星星草酶谱介于两类之间，为过渡类型。 Peroxidase isoenzyme and esterase isozyme of 5 species of Alcantara were studied by polyacrylamide gel electrophoresis. The results showed that there were significant differences Is very small, but the esterase isozyme has a big difference in the enzyme spectrum. The alkaloids in the five species are the same as the microperitoneal maize enzyme, Between two types, for the transition type.