Question

Can girdling experiments be done in monocots? If yes, how? If no, why not?

Answer 1

Girdling, also known as ring-barking, is the total elimination of a woody plant's bark from across the entire perimeter of either a branch or trunk. Girdling results in over time, the death of the area above the girdle. If less than half its circumference is girdled, a tree will normally survive.

Complete answer:
Girdling studies show that phloem is responsible for food translocation because phloem is present outside xylem, so the woody xylem portion stays intact when a ring of bark is removed from a woody plant, water and nutrients enter the leaves. It is not transported to other sections below the girdle after preparation of the photosynthate, as the phloem portion is removed. This experiment demonstrates that the phloem tissue helps the transport of food.
Girdling is in the form of a brace, the removal of the bark of a tree. Here the xylem is left intact in order to supply the sections of the tree with minerals and water. Girdling is often performed in woody plants since the vascular tissues are connected, but because the vascular bundles are dispersed and so cohesion is not broken, it is not possible in monocotyledons. It is primarily done to improve yield and reproductive rate.
So in the monocotyledons, Girdling's experiment cannot be performed.

Note: Girdling results in over time, the death of the area above the girdle. A fully girded branch will collapse, and when a tree's main trunk is girdled, the whole tree will die if it is unable to re-grow from above to bridge the wound. Girdling human activities include forestry, horticulture, and vandalism. Foresters use girdling practice to thin trees. By feeding on external bark, animals such as rodents can girdle trees, sometimes under snow during winter.