刘阳;董文轩;张蕾;程晓丹;

• 1:沈阳农业大学园艺学院
• 2:沈阳农业大学园艺学院
• 3:沈阳农业大学园艺学院
• 4:沈阳农业大学园艺学院 沈阳110161

摘要(Abstract)：

应用石蜡切片技术对结果期平邑甜茶的胚囊发生与形成过程进行了详细观察,以确定胚囊种类和发生特性。结果表明,平邑甜茶胚珠倒生,大孢子母细胞在盛花期前3～5d的花蕾期能减数分裂形成四分体并由合点端的大孢子发育成有性胚囊;到盛花期,多数有性胚囊败育,少数发育为八核胚囊。平邑甜茶的无性胚囊原始细胞始于盛花期前后靠近合点端的珠心细胞,并很快发育为单核无性胚囊,盛花后5～7d的坐果初期形成无性的八核胚囊。无孢子生殖胚囊可以单个发育,也可以多个发生而形成复合胚囊;其原始细胞发生的持续时间为10d左右。

关键词(KeyWords)： 苹果属;平邑甜茶;有性胚囊;无性胚囊;胚囊发生;败育;发育

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(30370985)。

作者(Author): 刘阳;董文轩;张蕾;程晓丹;

Email:

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