Epigenetic Research Progress on Flowering Time and Flower Organ Development in Angiosperms Epigenetic Research Progress on Flowering Time and Flower Organ Development in Angiosperms Analyses of a Glycine max Degradome Library Identify microRNA Targets and MicroRNAs that Trigger Secondary SiRNA Biogenesis Colonization of Azorhizobium caulinodans in wheat and nutrient-related miRNA expression The Potential Application of microRNA-mediated Gene Regulation in Crop Improvement Cold Tolerance Research of Sly-MIR167 in Tomato