Tapetum cells were elongated, vacuolated or tapetum was made up of multilayer cells or discomposed tardily.

 
  • 絨氈層細胞徑向過(guò)度伸長(cháng),高度液泡化,且出現多層細胞,嚴重擠壓小孢子母細胞,解體較晚且充塞花粉囊室;
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