No subject

[Arisaema Enthusiast Group (AEG) Discussion List (and other=]

hardy  Aroids)" <ARISAEMA-L at NIC.SURFNET.NL> Aroids)" <ARISAEMA-L at NIC.SURFNET.NL>
Sender: "Arisaema Enthusiast Group (AEG) Discussion List (and other=
From: "J.E. Shields" <jshields at INDY.NET>
Subject: Re: Variegated (questions)
In-Reply-To: <000e01c68eef$7e690ea0$38b2fea9 at compaq>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"; format=flowed

Hi folks,

I'm not well informed about Arisaema variegation or diseases, but I've ru=n
into plant viruses all too often over the past 30 - 40 years.

Plant viruses, once in a plant, essentially never go away.  They are
transmitted in most cases by a vector, such as aphids, mealy bugs,
etc.  All the offsets of a virus-infected plant are very likely to also
carry the infection.  Many collectors destroy any plant that looks
virus-infected as soon as it is discovered.  A virus infection can spread
throughout a greenhouse in just one or two growing seasons, depending on
the species of plants being grown and the particular virus involved.

Seeds from virused plants often do NOT carry the infection!  Again, it
depends on the species of plants being grown and the particular virus
involved.  If you have a prized plant that becomes virus infected, you ca=n
salvage some of its genes by propagating it by seed.  I prefer to use
healthy pollen on virused plants rather than the reverse, as I think I ha=ve
seen healthy plants become infected on pollination with pollen from a
virus-infected plant.

The variegation Chris showed us seemed like a virus to me because of the
random pattern to the mottling.

Jim Shields
in central Indiana


At 08:44 AM 6/13/2006 -0500, Russell wrote:
>........
>What is it about this variegation that makes you suspect it as being
>viral? Is it the over all marbling?  In Arisaemas, is a true mutation fo=rm
>of variegation only cream or silver centered leaves?  If viral, can this
>be intentionally induced or is it spontaneous?  If the plant produces
>offsets, does the viral variegation show up in them too?  Do seeds from
>this plant show the same viral variegation?  If viral, does it eventuall=y
>go away?
>........

*************************************************
Jim Shields             USDA Zone 5             Shields Gardens, Ltd.
P.O. Box 92              WWW:    http://www.shieldsgardens.com/
Westfield, Indiana 46074, USA
Tel. ++1-317-867-3344     or      toll-free 1-866-449-3344 in USA