Effects of biodegradable chelants on the root morphology and physiological-biochemical characteristics of Amaranthus hybridus L. in cadmium contaminated soils Physiological-biochemical Responses of Three Plant Species to Experimental Warming Using OTC in Alpine Meadow on Qinghai-Tibetan Plateau Effect of NaCl stress on growth and physiological-biochemical characteristicsof Stellaria dichotoma Effects of Cu2+and Zn2+ Stress on the Bulbil Germination and Physiological-biochemical Characteristics of Polygonum viviparum