1. The document discusses the definition and branches of horticulture. It defines horticulture as the cultivation of fruits, vegetables, flowers and ornamental plants.
2. The main branches of horticulture discussed are olericulture (production of vegetable crops), pomology (fruit crops), floriculture (flowers and ornamental plants), and plantation crops.
3. Various fruits, vegetables and flowers are classified under these branches. The document also discusses the differences between horticultural and agronomic crops as well as the types and origins of fruits.