Impact of pine wood nematode invasion on the micro-structures of different pine hosts Charactreristic of tissue structures of stem and leaf in K-type hybrid wheat and its parents after anthesis Studies on Histochemistry of the Developmental Epiphyllous Ovule in Ginkgo biloba var. epiphylla Studies on Histochemistry of the Developmental Epiphyllous Ovule in Ginkgo biloba var. epiphylla Change of the Leaf Tissue Structure of Evergreen Broad-leaf Plants duringOverwintering Some Changes in Chemical Components and Tissue Structure of Radix Sanguisorbae by Charcoal-Processing Decomposition regularity of organic materials in Sanjiang Plain region Leaf Structure Associated With Drought Resistance of Different Clover Cultivars Tissue Structures of Dioscorea Rhizomes and Authentication of Rhizoma Dioscoreae Hypoglaueae Medicinal Materials Relationship Between the Leaf Tissue Characteristic and Drought Resistance of Iris lactea Pall. var. chinensis(Fisch.) Distribution laws of 5 compounds in rhizome and root of Polygonum cuspidate Evaluation of Cold Resistance of Different Types of Magnolia grandiflora A STUDY ON CHANGE OF STRUCTURE OF COLLAPSED POPULUS DAVIDIANA SMALL-DIAMETER TIMBER AND MECHANISM OF COLLAPSE Studies on Anatomical Structures of Leaves and Their Drought Tolerance Features of Sedum aizoon L. and Sedum spectabilis Boreau Cold Resistance of Zenia insignis from Different Provenances Effects of Diethyl Phthalate Exposure on Biochemical Indexes and Tissue Structure of Kidney and Gill in Carps Relationship of tissue structure and resistance to Verticillium wilt in cotton