Isoperoxidase of the petals of 30 taxa of Fortunelia, Poncirus and Citrus was determined by polyacrylamide gel vertical slab electrophore-sis.

• 用聚丙烯酰胺凝胶垂直板电泳测定了金柑属(Fortunella)、枳属(Pon-cirus)和柑桔属(Citrus)30个分类群花瓣的过氧化物酶同工酶。