A comprehensive assessment of drought-resistance of three wild rocky-slope grasses Construction of SSH Library and Its Analyses of Cotton Drought Associated Genes under Drought Stress Photosynthetic Characteristics of Chenopodium album L. Grew under Drought-stress Condition Effect of salicylic acid on antioxidant enzymes of Chinese fir seedling under drought-stress Response of spiffy bushclover (Lespedeza formosa) to simulated moderate drought stress in two growth substrates