Gibberellins stimulate immediate growth in plants. They inhibit the formation of new roots and the creation of new phloem cells.
Kinins promote cell division.
Ethylene stimulates ripening and aging. By the terming of ruptured fruit I would assume that they are asking about the aging of the fruit. When fruit spoils it ruptures due to the presence of ethylene gas. Have you ever seen that infomercial for those green zip loc bags for your produce? 🙂
Abscisic Acid inhibits plant growth in the winter.
