Another way of cleaning up virus infected bulbs is by heat treatment. It undoubtedly varies by bulb species and pest species, but 55 C for an hour is perhaps close to what you can do. Rather than discard valuable but virus infected bulbs, try heat treating them first. I don't know, does heat also kill mycoplasma? Jim Shields > >But is it virus- and nematode-free? I suspect that 'Quince' is one of >those cultivars where all the commercial stock is diseased; >'Tete-a-Tete' is another such. I'm hoping that someone out there >has clean stock of 'Quince' or has run some through meristem culture >to clean it up. > ************************************************* 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 _______________________________________________ pbs mailing list pbs@lists.ibiblio.org http://www.pacificbulbsociety.org/list.php