[Production and transport of the stigmatic exudate of petunia].

1. The production of the stigmatic exudate of Petunia is related to the endoplasmic reticulum. 2. In the cytoplasm the exudate is present in the form of droplets and is transported in this form to the plasmalemma. 3. The plasmalemma acts in transporting the exudate-droplets into the cellulose wall. 4. There is an accumulation of exudate-droplets in the intercellular system of the stigmatic tissue and in the pectin-rich wall layer of the epidermis. 5. The exudate-droplets flow together to form a film after penetrating the cuticle of the epidermis.