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- W2377549030 abstract "The pollen of Pinus tabulaeformis Carr.comprised two prothallial cells, a generative cell and a tube cell which degenerated at pollen maturation. The generative cell had its own cell wall, seperating from the intine of pollen, but with its side wall attached to the intine. Cytoplasmic channels were present on the side of the generative cell wall, which faced to the tube cell cytoplasm. The generative cell differed conspicuously from the tube cell. The main differences include:(1)The chromatin in the generative cell nucleus was condensed, but was dispersed and had numerous nucleare pores in the tube cell nucleus; (2)There was no microbody in the generative cell but many microbodies were present in the tube cell cytoplasm; (3)More inclusions were present in the tube cell than in the generative cell. Both the generative cell and the tube cells contained lipid bodies and amyloplasts in the cytoplasm, but there were more amyloplasts in the former. The tube cell also contained a few proteins which was absent in the generative cell. In addition, there were numerous mitochondria, polyribosomes, and a few endoplasmic reticulums and dictyosomes in the generative and tube cells. DAPI staining demonstrated numerous cytoplasmic DNA in both generative cell and tube cell. The mode of cytoplasmic inheritance, and the composition, structure and the nature of the pollen wall of P.tabulaeformis are also discussed in this paper. " @default.
- W2377549030 created "2016-06-24" @default.
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- W2377549030 date "1998-01-01" @default.
- W2377549030 modified "2023-09-23" @default.
- W2377549030 title "ULTRASTRUCTURAL AND CYTOCHEMICAL STUDY ON MATURE POLLEN OF PINUS TABULAEFORMIS" @default.
- W2377549030 hasPublicationYear "1998" @default.
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