中文摘要：

Dysosma versipellis (Hance ) M。Cheng 前 Ying (Berberidaceae ) 是一稀罕、脆弱，对有药品的意义的中国地方性的长期的植物。植物的增加的产地损失和在利用上严重地在 situ 保存影响了植物，要求前 situ 保存和商业耕作。轻政体是经由生物资源和第二等的代谢物的有效生产贡献成功的前 situ 保存的一个关键环境因素。我们调查了 2 岁的 D 的回答。versipellis 以叶形态学，生长，生物资源生产，光合作用和 podophyllotoxin (PTOX ) 种到一个轻坡度累积。D。versipellis 以植物高度，叶尺寸，叶光合作用和 PTOX 累积对轻坡度作出回应。种表明的最佳的植物的生长，光合的能力，和 PTOX 生产，在到 30% 完整的日光的一个轻紧张平等者下面。尽管有没在生长上有显然不同的效果，半完整的日光导致了 PTOX 的最低生产。完整的日光能在仲夏(7 月) 引起叶死亡，尽管这些小植物显著地没在 7 月前在生长或生物资源生产不同，新叶子出现在 8 月。D。versipellis 因此被建议是阴影容忍的植物，很好在发光适应了变化。10%50% 的发光，特别地 ca。30% 完整的日光强烈为前 situ 保存和商业耕作被推荐。

英文摘要：

Dysosma versipellis （Hance） M. Cheng ex Ying （Berberidaceae） is a rare and vulnerable, perennial herb endemic to China with pharmaceutical significance. Increasing habitat loss and over-exploitation of the plant has severely affected the plant＇s in situ conservation, necessitating ex situ conservation and commercial cultivation. The light regime is a critical environmental factor contributing to successful ex situ conservation via efficient production of biomass and secondary metabolites. We investigated the responses of 2-year-old D. versipellis plants to a light gradient in terms of leaf morphology, growth, biomass production, photo- synthesis and podophyllotoxin （PTOX） accumulation. D. versipellis responded to the light gradient in terms of plant height, leaf size, leaf photosynthesis and PTOX accumulation. Plants demonstrated optimal vegetative growth, photosynthetic capability, and PTOX production, under a light intensity equal to 30% full sunlight. Half full sunlight led to the lowest production of PTOX despite having no obviously different effects on growth. Full sunlight was able to cause leaf death in mid-summer （July）, although these plantlets did not significantly differ in growth or biomass production before July and new leaves emerged in August. D. versipellis is therefore proposed to be a shade-tolerant plant, well adapted to variations in irradiance. Irradiance of 10%-50%, particularly ca. 30% full sunlight is strongly recommended for ex situ conservation and commercial cultivation.