This article is a study about the activity changing patterns of POD, PPO, NR and AAO in 11 tobacco varieties infected with brown spot disease.

• 本文研究11个烟草品种感染赤星病后过氧化物酶（POD）同工酶、多酚氧化酶（PPO）、硝酸还原酶（NR）和抗坏血酸氧化酶（AAO）活性的变化规律。