Effects of water stress on physiological characteristics of different Illicium lanceolatum ecotypes under low light intensity Effect of Arbuscular Mycorrhizal Fungi on Growth and Two Phenolic Acids of Medicago sativa under Various Mixed Salt-alkaline Stresses Effect of Root-zone Temperature on the Growth,Physiological and Biochemical Indexes in Cucumber Seedlings Effects of exogenous NO on reactive oxygen metabolism of Bidens pilosa seedlings under lead stress Effects of Iso-osmotic Ca(NO3)2 and NaCl Stress on the Growth and Osmotic Substances of Cucumber Seedlings