The invention provides seed and plants of sweet corn hybrid QHY6RH1077 and the parent lines thereof. The invention thus relates to the plants, seeds and tissue cultures of sweet corn hybrid QHY6RH1077 and the parent lines thereof, and to methods for producing a sweet corn plant produced by crossing such plants with themselves or with another sweet corn plant, such as a plant of another genotype. The invention further relates to seeds and plants produced by such crossing. The invention further relates to parts of such plants, including the parts of such plants.