Asexual reproduction refers to the process of directly producing new individuals from the mother without the combination of bisexual germ cells. The way in which plants propagate with vegetative organs such as roots, stems and leaves is called vegetative propagation. The methods of artificial vegetative propagation mainly include grafting, cutting and layering.
Grafting refers to grafting the bud or branch of one plant to another plant, so that the two parts can grow together into a complete plant.
Cutting generally refers to cutting off the stems of plants, inserting them into the soil after treatment, and then each branch can take root and sprout to grow new plants.
Layering: A method of burying branches and vines in a moist substrate and cutting them from the mother plant after they take root to form new plants. Also called pressing branches.
So, the answer is: nutrition; Cutting; Grafting; Layers.