英语语法分析

But the side walls usually lacked callose.

侧壁通常不具胼胝质。

The wall of the generative cell contains callose.

生殖细胞壁为胼胝质成分。

As development goes on, callose fluorescence disappears in the chalazal wall of diplosporous functional megaspore .

二倍体功能大孢子的合点端细胞壁内的胼胝质荧光消失。