Quote:
|
Originally Posted by bonsaial1
Rooting hormone contains gibberilliac acid which induces root growth. Auxins, a different hormone produce buds or shoots.
|
We went through this one
2 years ago Al, you are still lost in the woods:
Auxin is
produced by the shoot and
inhibits the development of buds while it simultaneously
encourages the development of roots. So, when you pinch back, you remove the source of auxin, remove the inhibition, and allow dormant buds an opportunity to develop. As they grow into shoots, those new buds begin to produce their own auxin, inhibiting competing buds while stimulating more roots and so forth.
The most common rooting hormones that mimic IAA (indole acetic acid) and are used for rooting are IBA (indole butyric acid) and naphthalene acetic acid (NAA); all are auxins - hormones that regulate growth
gibberellic acid is in a category of hormone. It is reported to affects growth positively, causing the elongation of shoots, flowering and seed development. I haven't seen it in rooting hormone, but I could believe it would be in some kind of Tomato Wonder Tonic
auxins
http://www.tiscali.co.uk/reference/...n/m0007030.html
IBA
http://www.super-grow.biz/IndoleBut...tingHormone.jsp
Plant Hormones
http://www.quickgrow.com/gardening_...t_hormones.html
As for root cuttings: I've had zero success with maple roots growing shoots. An article in Bonsai Today showed some grafting of shoots onto root cuttings worked with success. I would expect about the same result with hornbeam root cuttings,, but I have not tried, so more power to you. That is just a gut reaction. Persimmon root cuttings work close to 100%, though, as do Liquidambar.
Given its shoot-inhibiting properties, rooting hormone would not be a good choice to help encourage shoot growth. It would probably have the opposite effect. The main transport of auxin is downward, but it is an inhibitor to bud development.
Regards,
Matt