| 苹果梨花芽孕育期生长锥细胞超微结构的观察 |
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| 引用本文： | 郭金丽,张玉兰,郝喜龙.苹果梨花芽孕育期生长锥细胞超微结构的观察[J].果树学报,2001,18(4):213-216. |
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| 作者姓名： | 郭金丽 张玉兰 郝喜龙 |
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| 作者单位： | 内蒙古农业大学园艺系, |
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| 摘 要： | 利用透射电镜对苹果梨花芽孕育期芽内生长锥细胞进行了观察，结果显示，在花芽孕育形成的过程中，生长锥细胞的超微结构发生了一系列变化：蛋白体和脂类小滴逐渐增加；核外膜向外延伸到胞质中与内质网相连，其上分布的核糖体增多；线粒体和内质网数目丰富且分布均匀；核糖体大量游散在胞质中；质体呈浅裂，中央缢缩；微管分布于靠近质膜处等。以上超微结构的变化表现出细胞旺盛分裂和分化的特点，反映了花芽孕育过程中的细胞学特征。
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| 关 键 词： | 苹果梨 花芽孕育 生长锥 超微结构 |
| 文章编号： | 1009-9980-(2001)-04-213-04 |
| 修稿时间： | 2000年6月22日 |
Ultrastructural Observation on Vegetative Cone in the Stage of Flower bud Initiation of Pingguoli Pear Variety |
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| Abstract: | The observations were made on the vegetative cone cell of bud in flower－bud initiation stage of Pingguoli pear variety tree by transmission electron microscope． Results showed in the course of flower－bud formation， ultrastructure of vegetative cone cell happened a series of changes protein and lipid drop increased gradually the outer membrane of nucleus extended to cell cytoplasm and linked with endoplasmic reticulum，and there were plenty of ribosome on itmitochondria and endoplasmic were abundant and well－distributed；ribosome spreads largely in cell cytoplasm；plastid splits lightly and its center constricted；microtubule were close to the membrane of cell cytoplasm．These ultrastructural changes showed the vigorous fission and differentiation of cell， reflected the cytological characteristics of flower－bud initiation． |
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| Keywords: | Pingguoli pear variety Flower－bud initiation Vegetative cone Ultrastructure |
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