水稻双受精过程的超微结构观察  

Ultrastructure Observation of Double Fertilization in Oryza sativa

作　　者：郭欣[1] 申家恒[1] 王艳杰[2] 李伟[1] 赵月婵[1] 

机构地区：[1]哈尔滨师范大学生命科学与技术学院,植物生物学黑龙江省高校重点实验室,哈尔滨150025 [2]鲁东大学生命科学学院,烟台264025

出　　处：《植物学报》2013年第4期429-437,共9页Chinese Bulletin of Botany

基　　金：国家自然科学基金(No.30770134)

摘　　要：利用透射电子显微镜对水稻(Oryza sativa)双受精过程的超微结构进行观察。结果表明:水稻雌雄性核融合过程有其独特的特点,无论是精卵核之间的融合还是精核与极核(次生核)之间的融合,均未观察到相关细胞器作为介质参与雌雄性核的融合,只是雌雄性核的核膜直接融合。此外,在传粉3.5小时后的水稻材料中,观察到一例宿存助细胞核与精核相贴的图像。We used transmission electron microcopy to examine the process and ultrastructure of double fertilization in Oryza sativa.Such fertilization exhibits a unique fusing between the female and male nucleus.Direct fusion occurs only between the nuclear membranes of the female and male nucleus,instead of via mediating organelles,regardless of the presence of karyogamy between the sperm nucleus and egg cell nucleus or between the sperm nucleus and polar nucleus(secondary nucleus).Furthermore,the sperm nucleus attaches to the persistent synergid 3.5 h after pollination.

关 键 词：双受精 核融合 水稻 助细胞受精 超微结构 

分 类 号：S511[农业科学—作物学]