Science. 1963 Apr 12;140(3563):173-5. doi: 10.1126/science.140.3563.173.
Pollen tetrads in Typha latifolia result from the fusion of the outermost portion of the exine (the tectum) where microspores within the meiotic tetrad are contiguous. Exine stratification is discussed.
宽叶香蒲花粉四分体由最外层花粉外壁(覆盖层)融合形成,四分体中小孢子彼此邻接。本文讨论了外壁的分层情况。