图4. 野生型和ospks1-3突变体花粉及花药的扫描电镜和透射电镜分析
A—H：13期野生型和ospks1-3突变体花药和花粉表面的扫描电镜分析;I—L：10期野生型和ospks1-3突变体乌式体和花粉外壁的透射电镜分析。A：野生型花粉;B：野生型花药外壁;C：野生型花粉外壁;D：野生型花药内壁;E：ospks1-3突变体花粉;F：ospks1-3突变体花药外壁;G：ospks1-3突变体花粉外壁;H：ospks1-3突变体花药内壁;I：野生型花粉外壁;J：ospks1-3突变体花粉外壁;K：野生型乌式体;L：ospks1-3突变体乌式体。Ex：花粉外壁;DEx：畸形花粉外壁;Ne：外壁内层;Ub：乌式体;Ba：柱状体;Te：覆盖层。Bars：20 μm(A、E);10 μm(B、F);1 μm(C、D、G、H);0.5 μm (I—L)

Fig. 4. SEM and TEM observation for anther and pollen in the wild type and ospks1-3
A-H: SEM analysis of the surface of anthers and pollen grains in the wild type and ospks1-3 at stage 13; I-L: TEM observation of pollen wall and Ubisch body in the wild type and ospks1-3 at stage 10. A: Pollens of the wild type; B: Anther epidermis of the wild type; C: Pollen wall of the wild type; D: The inner surface of the wild type; E: Pollens of ospks1-3; F: Anther epidermis of ospks1-3; G: Pollen wall of ospks1-3; H: The inner surface of ospks1-3; I: Ultra-thin sections of pollen wall in the wild type; J: Ultra-thin sections of pollen wall in ospks1-3; K: Ultra-thin sections of Ubisch body in the wild type; L: Ultra-thin sections of Ubisch body in ospks1-3. Ex: Exine; DEx: Deformed exine; Ne: Nexine; Ub: Ubisch body; Ba: Bacula; Te: Tectum. Bars: 20 μm (A, E); 10 μm (B, F); 1 μm (C, D, G, H); 0.5 μm (I-L)