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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