ultrastructu 第7页

Effects of Pb on growth, heavy metals accumulation and chloroplast ultrastructure of Iris lactea var. Chinensis ULTRASTRUCTURAL TYPE OF NUCLEOLUS IN ROOT MERISTEMATIC CELLS OF CUCUMIS SATIVUS L. AND ITS CHANGES UNDER BORON DEFICIENCY THE ULTRASTRUCTURAL CHANGES INDUCED BY COLCHICINE IN MERISTEMATIC CELLS OF WHEAT ROOT POLLEN WALL ULTRASTRUCTURES OF THE SUBTRIBE TUSSILAGININAE (ASTERACEAE: SENECIONEAE) OF THE EASTERN ASIA AND THEIR SYSTEMATIC AND TAXONOMIC SIGNIFICANCE