中文摘要：

通过室内模拟试验，研究不同强度的UV-B辐射（10μW／cm^2和20μW／cm^2）对报春花生理代谢的影响，结果表明：（1）增强UV-B辐射下，报春花叶片叶绿素含量降低，且随UV-B辐射时间的延长，降低程度加大；（2）随UV-B辐射强度的增加，叶片质膜透性增加；（3）叶片类黄酮含量随着UV-B辐射强度的增加而增加，在辐射至40d时，叶片类黄酮含量达到最大值；（4）增强UV-B辐射下，报春花花瓣中花青素含量增加。

英文摘要：

Physiological and biochemical effects of UV-Bradiation at different intensities on Primula malacoides were studied throught indoor simulation and the results showed that （1） enhanced UV-B radiation lowered chlorophyll contents in the leaves of 19. malacoides and this chlorophyll decrement increased with the enhanced UV-B radiation prolonged ; （2） the plasmalemma permeability of the leaves increased as UV-Bradiation became intensified ; （3） flavonoid content in the leaves increased as UV-B radiation became intensified,and the highest flavonoid content appeared on the fortieth day of UV-B radiation; （4） procyanidins content in the petals of 19. malacoides increased under enhanced UV-Bradiation.