The protein content and activities of DNase, RNase declined with the process of floral development from flower buds to the opening of flowers of Magnolia denudata, and the peroxidase isozymogram also decreased.

• 白玉兰从花蕾到花开放过程中,蛋白质含量及脱氧核糖核酸酶(DNase),核糖核酸酶(RNase)的活性均下降; 过氧化物酶同工酶谱带亦减少。