Bulbous plants are those with organs for nutrient storage and these include tubers, corms, and bulbs. They can be ornamental or edible, herbaceous or perennial. Important examples of such plants are potato, sweet potato, yam, arrowroot, and dahlias. Bulbous Plants: Biotechnology focuses mainly on economically important food crops, their propagation strategies, plant growth and development, tuber quality, and crop protection.