Modes of Action of Phytochromes in Establishing DifferentPhototropic Responsiveness of Maize Coleoptiles Effects of Natural High Temperature and Irradiation on Photosynthesis and Related Parameters in Three Arid Sandy Shrub Species Effect of Shading on Photosynthetic Characteristics of Areca triandra and Ficus microcarpa in Greenhouse in Summer Effects of calcium on peanut (Arachis Hypogaea L.) seedling growth, accumulation of reactive oxygen species and photoinhibition Xanthophyll Cycle and Inactivation of Photosystem II Reaction Centers Alleviating Reducing Pressureto Photosystem I in Morning Glory Leaves under Short-term High Irradiance Calcium contributes to photoprotection and repair of photosystem II in peanut leaves during heat and high irradiance NaCl stress aggravates photoinhibition of photosystem II and photosystem I in Capsicum annuum leaves under high irradiance stress