Which hormone in barley and wheat seeds promotes germination by synthesizing amylase enzyme?

Which of the following gibberellic acids was discovered first?

$A$ phytohormone,which increases the production of starch hydrolyzing enzymes during the germination of maize seeds,is employed for the following:

It promotes bolting in beet,cabbages and many plants with rosette habit.

To make stored food available for germination,with which hormone should a seed be treated?

The rice seedlings infected with the fungus $Gibberella$ $fujikuroi$ are called 'foolish seedlings'. What was the reason behind this?