Effects of light intensity on secondary metabolite camptothecin production in leaves of Camptotheca acuminata seedlings Effects of greenhouse light intensity and quality on biomass and salidroside content in roots of Rhodiola sachalinensis Regeneration and restoration of broad-leaved Korean pine forests in Lesser Xing′an Mountains of Northeast China Relationship between Photosynthetic Rate and Light Intensity in Summer Soybean Effects of Seedling Shading and Light Intensity Transfer on Photosynthetic Efficiency of Different Maize (Zea mays L.) Hybrids The Varietal Difference of Tolerance to Low Light Intensity in Rape (Brassica napus L.) Plants Effects of Light Treatment on the Germination of Pometia tomentosa (Sapindaceae) Seeds Effect of different light intensities on photosynthetic characteristics and growth of Stephania kwangsiensis THE O2 AND NO2- PHOTOREDUCTION IN CHLOROPLASTS OF SUN AND SHADE LEAVES OF WOODY PLANTS