Wilting is the loss of turgidity of leaves and other soft aerial parts of a plant causing their drooping, folding and rolling. Wilting is of three types :
(a) Incipient wilting: There are no external symptoms of wilting but the mesophyll cells have lost sufficient water due to transpiration being higher than the
(b) Temporary wilting : It is the temporary drooping down of leaves and young shoots due to loss of turgidity during noon. It can be corrected only after the rate of transpiration decreases accompanied by replenishment of water around root hairs.
(c) Permanent wilting : It is that state in the loss
of turgidity of leaves when they do not regain their turgidity even on being placed in a suitable atmosphere