纺锤丝是光学显微镜下所见到的有丝分裂期组成纺锤体的丝状结构之总称。 动物细胞的纺锤丝由中心体释放。植物细胞的纺锤丝由细胞两极发出。
In pollen mother cells (PMCs) of the diploid hybrids, the major chromosome configuration was 17 univalents and 1 bivalent at diakinesis and metaphse I (M I). The abnormal meiotic behaviors such as chromosome lagging and spindle misorientation were frequently observed.
减数分裂研究发现，正反杂种减数分裂行为无明显差异，终变期和中期Ⅰ，主要以17条单价体(Ⅰ)和1个二价体(Ⅱ)构成；整个花粉母细胞的减数分裂行为异常，经常可见后染色体滞后和中期纺锤丝定向紊乱。
参考来源 - 黄瓜属种间遗传资源的创制及其细胞学和分子遗传学定性研究·2,447,543篇论文数据，部分数据来源于NoteExpress
在透射电镜下观察到有细胞核膜消失，染色质变成粗颗粒状．中心粒一分为二，两中心粒之间还有纺锤丝牵引；
Under electron microscope, it was found that in some cells the nuclear membrane disappeared partly, chromatin became broadly granular and two centrioles were jointed by spindle fibers.
在纺锤体迁移的过程中，一个无微绒毛但富含微丝的区域形成于其上方皮质区域。至此，卵母细胞的极性形成。
During spindle migration, an area enriched in actin microfilaments and devoid of microvilli begins to form in the cortex overlying the spindle, and prominent cortical polarity develops.
微丝是控制纺锤体旋转的关键因素；
Microfilaments play a crucial role in regulating spindle rotation.
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