Re: HYB: evaluating seedlings
- Subject: Re: [iris-talk] HYB: evaluating seedlings
- From: B* S*
- Date: Tue, 23 Apr 2002 08:42:12 -0400
On 4/22/02 4:29 PM, "Mike Sutton" <suttons@lightspeed.net> wrote:
> i have heard about that but have not tried it personally. Don't see how it
> would much increase the increase. If you cut and divide rhizome it seems
> that it would still only increase at the toes anyway so instead of having a
> one year clump with 4 increases you have 2 one year clumps with two
> increases. Might be wrong on that because I haven't tried it, would love to
> hear some results of the practice.
> Mike
>
> ----- Original Message -----
> From: <wmoores@watervalley.net>
> To: <suttons@lightspeed.net>
> Cc: <iris-talk@yahoogroups.com>
> Sent: Monday, April 22, 2002 6:37 AM
> Subject: Re: [iris-talk] HYB: evaluating seedlings
>
>
>> Mike, there is talk on another group about cutting rhizomes
>> into sections like potatoes and planting for faster propogation. Have
> you
>> ever tried this?
I think the rationale for this is that the new increases at the toe produce
hormones that suppress growth in buds further back on the rhizome. If the
rhizome is cut into sections, perhaps as small as one bud per section, these
will be freed from inhibition and sprout. Same thing happens (saw it this
spring) when old rhizomes are accidentially rototilled into a bed and cut in
many bits. Each bit (if it does not rot) produces at least one new shoot.
Sometimes this happens when the rhizome piece is deeply buried, and the new
shoot develops at the top of a long stolon that reaches the surface.
Louisiana iris growers often advocate taking old "back" rhizomes and
splitting them lengthwise, then planting. I've tried this and it produces a
"row" of new increases. Similarly, when you divide a cattleya orchid, the
old "back bulbs" will usually produce new sprouts, something they will not
do while still under the influence of the rapidly growing new pseudobulbs.
So in theory, it would be worth a try. How about someone with a lot of
space trying an experiment?
Bill Shear
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