Ultrastructural Change in Sesbania Cann Abina Root Nodules During Their Developments Cytoplasmic Inheritance of Sweet Potato: with Respect to the Study of Plastids and Mitochondria and the Existence of Their DNA in Sperm Cells Cytoplasmic Nucleoids in the Generative Cell, Sperm Cell and Egg Cell of Calystegia heder acea Changes of Plastids Mitochondria and Their DNA in the Egg Cell Before and After Fertilization in Pharbitis