The ultracytochemical localizations of ATPase activity on amyloplasts and protein bodies were studied by using a lead precipitation technique at middle and late developmental stage of endosperm in rice (Oryza sativa L. cv. Minghui 63).
View Article and Find Full Text PDFZhi Wu Sheng Li Yu Fen Zi Sheng Wu Xue Xue Bao
April 2004
The starchy endosperm of wheat underwent programmed cell death (PCD) during its development. It showed a ladder of DNA fragments in multiples of 180-200 bp at specific stages when analyzed by agarose gel electrophoresis. The onset of internucleosomal fragmentation of the genome in wheat endosperm could be accelerated by ethylene.
View Article and Find Full Text PDFThe development of mature tracheary elements (TEs) of rice (Oryza sativa L. cv. Nongkeng 58s-SD) stamen from big-vacuole to trinucleate pollen stage was studied with lead phosphate--deposition technique.
View Article and Find Full Text PDFShi Yan Sheng Wu Xue Bao
February 2004
The cellular ultrastructural morphology, grain filling ratio and activity of related enzymes during denucleation development stage in starchy endosperm cell of an Indica rice variety Zhongxian 8836 were observed and analyzed. The endosperm cellularization was completed at about the 3rd day after flowering (DAF). At 5 DAF a few endosperm cells initiated denucleation development.
View Article and Find Full Text PDFSheng Wu Hua Xue Yu Sheng Wu Wu Li Xue Bao (Shanghai)
April 2003