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  variegata aroids + a lots of questions + contacts
From: "Michael Marcotrigiano" <mmarcotr at email.smith.edu> on 2006.12.21 at 16:36:47(14974)
Variegation can be induced with nasty mutagens like Nitrosomethyl urea.
I would not recommend doing so unless you have a compelling reason and
experience using such chemicals. There are a few viruses that cause
variegation but most of them harm the plant and make them useless. The
big exception is some forms of the mallow family Abutilon.
Micropropagation can induce many variations and some of the variegated
forms of plants do come from micropropagation but it appears to be low
frequency so finding them involves a great deal of chance and or large
commercial production where tens of thousands of plants are produced and
grown out. Spontaneous mutations of plastids can occur and are seen in
seedlings on occasion and this is the source of some variegated plants.
So the answer is not simple.

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