Effect of Cytokinin on the Enhancement of Nitrate Reductase NR Activity in Tobacco Callus Tissues and Wheat Seedlings Effects of cooperation between associative azotobacteria and rhizobia on wheat seedling Effects of exogenous cysteine on growth, copper accumulation and antioxidative systems in wheat seedlings under Cu stress Effects of exogenous glycinebetaine on the salt-tolerance of wheat Effect of Zn2+, Cd2+and their combined on Ca, Fe and Mn uptake by wheat seedlings Physiological and ecological effects of enhanced UV-B radiation on wheat seedling under NaCl stress condition STUDY ON DROUGHT RESISTANCE MECHANISM OF DISPHENYLUREUSULFONIC CALCIUM IN GROWTH OF WHEAT SEEDLINGS Influences of multiple stress by Cd, Pb and Cr on physiological-biochemical characters of wheat seedlings Influence of Calcium on Alleviating NaCl-Induced Injury Effects in Wheat Seedlings Stability Effects of Cold-acclimation on the Plasmolemma Ca2+ ATPase of Winter Wheat Seedlings Inhibition of Root Growth and DNA Damage Caused by Cr6+ Stress in Wheat Seedlings Influence of He-Ne Laser Pretreatment on Physiological Characteristics in Wheat Seedlings under Cadmium Stress Effects of Exogenous Hydrogen Peroxide on the Physiological Index of Wheat Seedlings under Salt Stress Effect of Simulated Acid Rain and Its Acidified Soil on the Biomass and Some Physiological Activities of Wheat Seedlings Theeffect of Cd2+ on the activity of protectiase and cellmembrance lipid peroxidation change of wheat seedlings Effect of simulated acid rain and its acidified soil on lipid peroxidation of wheat seedlings Effects of Exogenous Spermidine on Photosystem II of Wheat Seedlings Under Water Stress