J Integr Plant Biol. ›› 1983, Vol. 25 ›› Issue (2): -.

• Research Articles •    

Observations on the Rate of Early Embryogenesis and Cytomixis in Spring Wheat

Wang Yao-zhi and Cheng Kuo-chang   

Abstract: The rate of early embryogenesis and cytomixis of spring wheat has been observed. The results obtained are summarized as follows: 2 h. after pollination, the two sperms entered into the egg nucleus and the polar nucleus respectively; after 6 h. triple fusion has been completed, a male nucleolus is discernible in egg nucleus. Twenty-four h. after pollination, 2-celled proembryo can be detectable, after 6 d the differentiation in some embryo has initiated. Three d after pollination, the formation of endosperm cells are proceeding, upto 6 d, the embryo sac are full of endosperm cells. After pollination through full development, the degeneration of the antipodals appears, 4 d later the structure of cell and nucleus disappeared. Only naked nucleoli and chromatin mass are remained. After 8 d the degeneration of antipodals almost has completed. Cytomixis has been seen in the cell of nucellus, endosperms, ovary, proembryo and differentiated embryo and it frequently appeared near the proembryo.

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