Write an esay on the phytochrome, Gibbberellins in plants.
Describe the concept of Phytochrome.
Explain the synergistic effect of phytochromes.
{:((1),"Chailakhyan",(i),"Abscission II"),((2),"Butler et al.,",(ii),"florigen"),((3),"Leaves of Betula",(iii),"Phytochrome"),((4),"young cotton Bolls",(iv),"dormin"):}
