闹羊花素 Ⅲ (Rhodojaponin Ⅲ ,简称R Ⅲ )能显著降低 5龄菜青虫血淋巴和肌肉海藻糖含量。R Ⅲ以每虫 1～ 10 μg处理试虫后 6 0h ,血淋巴海藻糖酶活性明显受抑制。R Ⅲ对肌肉海藻糖酶活性的影响依剂量不同而异。处理后 6 0h内 ,10 μg处理时无明显影响 ,3～ 5 μg处理则有可逆性激活作用 ,1μg处理则在 6 0h内保持激活作用 Rhodojaponin Ⅲ (R Ⅲ) significantly reduced the hemolymph and muscle trehalose content of 5th instar larvae. After treatment with 1 ~ 10 μg / L of R Ⅲ for 60 h, the hemolymph trehalase activity was significantly inhibited. The effect of RIII on muscle trehalase activity varies by dose. Within 60 h after treatment, 10 μg treatment had no significant effect, 3 ~ 5 μg treatment had reversible activation, 1 μg treatment remained active within 60 h