Ultrastructural Features of Nucleus Degradation During Programmed Cell Death of Starchy Endosperm Cells in Rice In Vitro Development of Tobacco Primary Endosperm Cells in Microculture Studies on the Relationship between the Grain Sink Strength and It’s Starch Accumulation in Rice (O.sativa) Comparison of Multiplication of Endosperm Cell and Physiological Activity in Developing Kernels among Normal Corn, Glutinous Corn and Pop Corn Degeneration of Nucleus and Ultracytochemical Localization of Hydrolytic Enzymes during Starchy Endosperm Development in Rice Relationship between the Cell Proliferation and Cytokinin Contents in Rice Endosperm during Its Development Characters of endosperm cells in the seeds of some species of Roegneria and their taxonomic significance Effect of Fixation and Staining Methods on Structure Observation of Endosperm Cell of Wheat Diversity of endosperm cells in Elymus and related diploid genera Hormone Contents in Kernels at Different Positions on an Ear and Their Relationship with Endosperm Development and Kernel Filling in Maize Study on diversity of endosperm cells in seeds of Leymus Physiological Activities and Multiplication of Endosperm Cell at Filling Stage of Kernels with Different Yield Potential in Maize