Plant hormones

[victor]

whic of these hormones affect the growth of plant? Auxin or Giberellin? Sometimes I get a little confused with these two..please give some explanations after answering it..thanks

[jonofbridger]

If I remember correctly, they both effect growth in different ways:

Auxins affect cell division mainly at the tip of stem or root. Just behind the tip the cells grow in size under the influence of auxins, causing the stem or root to grow longer. They also afect inhibition of development of axillary buds, tropisms, and the initiation of roots.

Gibberellins chiefly affects stem growth (when applied to dwarf plants, the dwarfs grow a little taller), but also affects the breaking of dormancy in certain buds and seeds, and flowering.

[mothorc]

do you know a book which explaining these problems (phytohormone affect)
thanks

[MrMistery]

A book? You can find suffiecient info on fitohormones in any botany book... Unless you are doing some sort of research program on the subject, that is