Bye Bye by BOY

 In some tree species such as pine and eucalyptus , the sections called the crown of the upper branches form gaps with those of neighboring trees. This is called crown shyness. It is still unknown why this condition which is more common in trees of the same species occurs. Some hypotheses on this subject are given below. The gaps between trees are formed when branches and leaves have blown in windy weather are damaged by collisions and fall. An experiment was made to test this hypothesis, called reciprocal pruning . In this experiment, it had seen that the gap between two trees with fixed crown parts was closing. But some researchers studying different species think that some trees that show crown shyness stop growth in the up sections before the collision occurs. The reason for this is said to be the phytochrome structure that detects sunlight. Depending on the angle of the sunlight, the tree that is sometimes in the shade of the other tree stops growin...