However, depending on the focus of their research, they might be called:
* Botanist: This is the most likely term, as botanists study plants in general.
* Horticulturist: If they are specifically focused on pumpkin cultivation and improvement.
* Plant Pathologist: If they are researching diseases affecting pumpkins.
* Agricultural Scientist: If they are studying pumpkins in a wider agricultural context.
It's also possible they have a more specific title related to their area of expertise, like a "cucurbit specialist" or a "pumpkin genetics researcher."
