Cloning and Expression Analysis of Betalain related Transcription Factor Gene AmMYB1 in Amaranthus tricolor L. Effects of Salt Stress on Stomatal Differentiation and Movements of Amaranth (Amaranthus tricolor L.) Leaves Effects of Salt Stress on Stomatal Differentiation and Movements of Amaranth (Amaranthus tricolor L.) Leaves THE EFFECT OF ROOT SYSTEM TEMPERATURE ON GROWTH AND PHOTOSYNTHE TIC CHARATERISTICS IN AMARANTHUS TRICOLOR