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林业科学 ›› 2004, Vol. 40 ›› Issue (5): 210-212.doi: 10.11707/j.1001-7488.20040535

• 研究简报 • 上一篇    下一篇

枣授粉受精及胚胎发育研究

张学英 彭士琪 郭振怀   

  1. 河北农业大学园艺学院,保定071001
  • 收稿日期:2003-10-25 修回日期:1900-01-01 出版日期:2004-09-25 发布日期:2004-09-25

Studies on the Pollination, Fertilization and Embryo Development of Chinese Date `Wu_He_Zao' (Ziziphus jujuba)

Zhang Xueying,Peng Shiqi,Guo Zhenhuai   

  1. College of Horticulture, Agricultural University of Hebei Baoding071001
  • Received:2003-10-25 Revised:1900-01-01 Online:2004-09-25 Published:2004-09-25

关键词: 枣, 授粉, 受精, 胚胎发育

Abstract:

The processes about pollination, fertilization and embryo development of Chinese Date ‘Wu_he_zao’ (ziziphus jujuba) were observed by means of lightmicrocope combining histochemical dyeing and fluorescent technique. The results were summarized as follows:The pollen grains germinated on the stigma at the 4th hour after pollination. On the 5th day after pollination, the primary endosperm nucleus formed, and the zygote formed on the 6th day. The double fertilization of Wu-he-zao was the type premitotic syngamy. The first division of the zygote took place after a dormancy for about 6~7 days. The proembryonal development of Wu-he-zao belonged to the Solanad type. The development of the endosperm belonged to the nuclear type.

Key words: Ziziphus jujuba, Pollination, Fertilization, Embryo development