Pollen shape and size 花粉粒特征
The results showed that there were obvious differences among the pollen grains in terms of pollen size, shape, colour and surface structures.
结果表明:所研究的植物花粉粒在大小、形态、萌发器官和外壁纹饰上有明显差异;
Except for some differences in exine ornamentation and pollen size, there is no great evolutionary divergence among genera in pollen morphology.
总体来讲,花粉没有大的演化分异,只是表面纹饰和花粉大小有一定的差异。
To find the reason of low seed-setting of red Pitaya, it compared flower shape, pollen size and pollen viability between red pitaya and white pitaya flower.
本试验通过红肉火龙果和白肉火龙果花的外形、花粉粒大小和生活力的差异比较,探究红肉火龙果授粉结实率低的原因。
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