本试验对10个葡萄品种及22个野生种的花粉大小及萌发孔形状进行了观察。

The size and the forms of aperture of 10 cultivars and 22 species of pollen in Vitis were studied.

youdao

四倍体刺槐自身花粉粒的形状结构之间表现出丰富的变异：体积与形状多样，萌发孔沟的数量及位置不固定，外壁表面的纹饰特征彼此不同等等；

There were remarkable variations in the shape, volume, location and number of bourgeon -hole channels and veins on surface of pollen among pollens of TRP.

youdao