Fire and Temperature Effects on Seed Germination from Burned Plots and Unburned Plots in Sheepgrass Steppe Effect of spermidine on seed germination and physiological characteristics of Perilla frutescens seedlings under NaCl stress Effects of exogenous 5-aminolevulinic acid on seed germination and physiological characteristics of Cassia obtusifolia seedlings under NaCl stress Effect of exogenous nitric oxide on seed germination of Oldenlandia diffusa under drought stress Effects of different treatments on seed germination of Dioscorea nipponica Effects of silicon addition on seed germination and seedling growth of Glvarrhiza uralensis under salt stress Effect of Chitosan Coating on Seed Germination and Salt-tolerance of Brassica napus L. Allelopathic Effects of Aqueous Extracts of Platyciadus orientalis Different Organs on Seed Germination and Seedling Growth of Pinus tabulaeformis Effects of exogenous nitric oxide on seed germination and seedling physiological characteristics of Isatis indigotica under NaCl stress Effects of exogenous salicylic acid on seed germination and seedling growth of Pogostemon cablin under salt stress Effects of different soaking treatments on seed germination and seedling growth of Platycodon grandiflorum Allelopathic effect of Tridax procumben on four kinds of crops Studies on germination condition of Marsdenia tenacissima seeds