North American Fruit Explorers mailing list at ibiblio

["tanis cuff" <tanistanis@hotmail.com>]

I sent the original question to an Extension person, and he suggested 2 
things to trouble-shoot.  One was whether the callus tissue had formed on 
mature or immature tissue (what was the state of your cuttings), and the 
second was the possibility that if the concentration of rooting hormone was 
too high, it could be toxic.
Myself, I think rooting is just plain magic anyway, so who knows.

tc






> From: "Mark Lee" <markl@nytec.com>
> Reply-To: North American Fruit Explorers <nafex@lists.ibiblio.org>
> To: "North American Fruit Explorers" <nafex@lists.ibiblio.org>
> Subject: RE: [NAFEX] rooting cuttings
> Date: Thu, 1 May 2003 08:47:12 -0700
>
> I read a report at the following link on successfully rooting cuttings from 
> a difficult to root shrub, Atriplex canescens 
> >http://jrm.library.arizona.edu/data/1997/504/413-418_mei.pdf .  Not
> technically a fruit (seeds are edible by humans and animals), I think 
> anyone in NAFEX that shares my interest in plant propagation will find this 
> information intersting.
>
> The researchers found that a combination of standard rooting hormone, IBA, 
> mixed with a little gibberellic acid, GA3, produced a high percentage of 
> rootings.  I bought GA3 from JL Hudson a few years ago, and have used it in 
> breaking dormancy of a number of different kinds of seeds.  I think I will 
> try it on some of my cuttings that are producing lots of callus tissue but 
> no roots.  The researchers let the callus tissue build up for a month 
> before adding the IBA/GA3 mix.  Rooting took 3 months.  I guess I need to 
> be patient.  The researchers also observed that moving some of the shoots 
> from a sterile environment into dirt was an additional factor that helped 
> induce roots.  Maybe I will try that too.
> -Mark Lee, Seattle, zone 8a

> -----Original Message-----
> From: nafex-bounces@lists.ibiblio.org
> [mailto:nafex-bounces@lists.ibiblio.org]On Behalf Of markl
> Sent: Tuesday, April 29, 2003 8:33 AM
> To: North American Fruit Explorers
> Subject: [NAFEX] rooting cuttings
>
>
> The last time I took a class in biology was back in junior high.  I wish I 
> had a chance to study about plants in college, but my career lead in a 
> different direction.  I have been observing a number of cuttings this 
> spring as they respond the rooting hormone that I dipped them in.  The 
> grape cuttings all formed callus tissue followed rapidly by root hairs.  
> These are now doing nicely out in the garden.  A number of other plants 
> have produced a thick layer of callus cells, but no sign of roots.  What 
> does it take for a cutting to switch modes from callus tissue production to 
> root hair production?  I hope someone with more advanced training or 
> experience can answer this mystery.
> Thanks,
> Mark Lee, Seattle, zone 8a
> _______________________________________________

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