The Changes of Several Endogenous Phytohormones during Microtuber Formation in vitro in Solanum tuberosum L. The Changes of Several Endogenous Phytohormones during Microtuber Formation in vitro in Solanum tuberosum L. Dynamic changes of endogenous phytohormones during the after-ripening process of Panax notoginseng seeds Effects of high temperature on photosynthesis characteristics, phytohormones and grain quality during filling-periods in rice Relative Physiological and Biochemical Features of Redifferentiation Differencein Three Types of Calli Subculture in Anthurium andraeanum Dynamic changes of endogenous phytohormones during after-ripening process of Panax notoginseng seeds