| 摘要: |
| 应用扫描电子显微镜,对安梨、花盖梨、尖把酸梨、南果梨和磨盘梨5种秋子梨品种的花粉进行了形态观察.结果表明,不同秋子梨品种花粉的外部形态大致相同,均为橄榄形,有3条萌发沟,不同品种的萌发沟宽度存在差异,轴面观主要为三角形与方形2种;不同品种花粉粒的大小差异不大,均为30～50 μm;不同品种间花粉壁表面纹饰存在较大的差异,其主要为网脊粗细及其交叉与平行排列的程度不同,其中花盖梨与南果梨网脊主要为平行排列,安梨、尖把酸梨与磨盘梨的网脊走向以交叉为主.此外,不同品种的网孔大小与形态也存在差异. |
| 关键词: 秋子梨 花粉形态 扫描电镜 |
| DOI： |
| 分类号: |
| 基金项目:吉林省教育厅科研计划项目（吉教科合字［2004］第57号） |
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| Observation on the pollen morphology of different genera and species of Pyrus ussuriensis Maxim |
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| Abstract: |
| The pollens of five cultivars of Pyrus ussuriensis Maxim were observed through electron microscope.The results showed that:the pollens outside configuration of different cultivars were approximately similar,and they were all olive shaped and had three bourgeon channels.There were differences in width of bourgeon channels of different cultivars.Most of axis view of pear pollen of different cultivars was triangle and square shape.There were little differences in pollen size was different cultivars,and their size were about 30-50 μm.There was significant deference in ektexine ornamentation of pollen.The width of net ridge of different cultivars and direction differed a lot,and the net ridge of Huagai pear was parallel,while An pear,Jianbasuan and millstones pear gave priority to crossover.Furthermore,there were differences in the size of network and configuration of 5 cultivars. |
| Key words: Pyrus ussuriensis Maxim pollen morphology electron microscope |
