绞股兰提取物0.5％、1.0％浓度对雄性果蝇平均寿命分别延长11.8％和12.2％。0.25％浓度对雌雄蝇平均寿命分别延长18.5％和24.1％。0.5％绞股兰提取物在孵育期的卵开始给药,其平均寿命比成虫(30日龄)开始给药有明显延长,延长百分率前者为53.3％(♂)、46.1％(♀),后者为14.4％(♂)、9.7％(♀)。绞股兰提取物能促进果蝇幼虫的生长发育,但对果蝇的性活力未见影响。 Gynostemma extract 0.5%, 1.0% of the average life span of male fruit flies were extended 11.8% and 12.2%. The average life span of male and female flies were prolonged by 18.5% and 24.1% respectively at the concentration of 0.25%. The average life span of 0.5% Gynura divaricata extract was significantly longer than that of adults (30 days old), with the former being 53.3% (♂) and 46.1% (♀) after the incubation period They were 14.4% (♂) and 9.7% (♀). Gynostemma extract can promote the growth and development of fruit fly larvae, but no effect on the vitality of fruit flies.