A Study of Growth Development of Male Strobilusand Pollen Collection of Masson Pine IRRADIATION EFFECT ON GROWTH DEVELOPMENT AND OFFSPRINGS CHARACTER OF MILLET IN THE STRATOSPHERE THE INTRODUCTION AND OBSERVATION OF GROWTH AND DEVELOPMENT OF SCHNABELIA EFFECTS OF NITROGEN ON THE DYNAMIC CHANGE OF NITRATE REDUCTASE ACTIVITY AND GRAIN PROTEIN CONTENT OF WHEAT Study on Growth,Development and Cytogenetics of Elymus canadensis×E.dahuricus Hybrid F1 The growth developmental characteristics of late and early maturing winter wheat varieties in Huang-Huai-Hai Plain The effects of temperature on laboratory population of Cryptolaemus montrouzieri Mulsant Ecological adaptation and physiological response of Artemisia halodendron seedling to sand burial