> 	I'm not at all knowledgable on CV viruses, but the general rule 
> in horticulture is that plant viruses are not transmitted in seed or 
> pollen; therefore frequent propagation by seed is advised for renewing 
> stock in such groups as lilies....
       Are you sure about the 'not by seeds'?  I can't quite see how this
       would work.
 
> 	As mentioned by another party, meristem tissue culture is 
> normally clean, and traditional vegetative propagation from rapidly 
> growing shoots [tip cuttings] of iinfected plants often is virus-free. 
       Yes, apical meristem may be used for tissue culturing virus-free
       plants, but from what I've read, this is not really a feasible 
       method for amateur 'kitchen sink' TC.  The portions selected must 
       be minute (<1mm,) usually composed of the apical dome alone, with 
       maybe a leaf primordium or two at most, carefully dissected under 
       a microscope, and even under professional laboratory conditions the
       success rate is low.  Perhaps thermotherapy prior to meristem removal
       would make this more practical (by allowing a larger explant,) but it
       still seems a bit ambitious to me (unless you've got a professional-
       grade laboratory, that is.)
       Has anyone tried thermotherapy (or any other techniques,) on CPs for
       home use?
       It strikes me that lowland Neps might be quite slow to exhibit
       symptoms of infection, given the temperatures they're grown at,
       and might therefore be correspondingly easier to work on in this
       manner.  Any thoughts anyone?
       Happy growing,
                  Peter
snail:Peter Cole,17 Wimmerfield Cr. :mailto:carnivor@bunyip.demon.co.uk
     Killay, SWANSEA SA2 7BU, WALES :http://www.angel.co.uk/flytrap/index.htm
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