Changes of Endogenous Plant Hormone Contents during Grain Development in Wheat Change of Endogenous Plant Hormones Contents during Seedling Growth of Picea schrenkiana Treated with DHAP EFFECTS OF NITROGEN FORMS ON ENDOGENOUS PLANT HORMONES CONTENT IN DIFFERENT ORGANS OF WHEAT AFTER ANTHESIS ENDOGENOUS HORMONES LEVELS IN CUTTINGS OF LARIX OLGENSIS AND THEIR RELATIONS TO ROOTING Dynamic Changes of Endogenous Hormones in Thermo-photo-sensitive Male Sterile Wheat Line BNS Water cultured propagation of Polygonum multiflorum and dynamic changes of physiological and biochemical characteristics during adventitious roots formation