The main differences between emitter and collector are doping concentration and size. The emitter is heavily doped, while the collector is lightly doped. You could try to swap them, but you'll get a very low \$H_{FE}\$, probably even less than 1.
Image Credit: Photo: Oxmoor House. SEASON: Although available year-round, eggplant is at its peak from July to October. CHOOSING: When selecting, look for eggplants with firm, glossy skin. Size and color vary widely among types, but the eggplant should feel heavy. Avoid those with wrinkled skin, soft spots, or brown patches.
Eggplant requires 100 to 140 warm days with temperatures consistently between 70Â° and 90Â°F to reach harvest. Eggplant is best started indoors and later transplanted into the garden; sow eggplant indoors 6 to 8 weeks before setting plants into the garden.