R.H. Lawson
As technologies to produce virus-free bulb crops improve, the standards of quality also increase. Certification standards designed to meet increased quality requirements have been based on better methods of virus detection as well as on recovery and maintenance of healthy nuclear stocks for mass propagation. Nuclear stock programs for the production of virus-free vegetatively propagated crops have been practiced in major bulb producing countries for many years. In spite of this progress, virus diseases in many major and minor bulb crops continue to cause economic damage. More sensitive and reliable methods need to be developed to detect low concentrations of viruses in dormant storage organs as well as in the actively growing plant. Better methods of producing and assessing the health of bulbs derived from tissue culture therapy are also needed. Reinfection in the field is still a problem in some crops and crop protection should be improved as new cultural procedures are introduced. The purpose of this paper is to review recent developments in methods of virus detection, the application of tissue culture technologies to produce and maintain virus-free plants, and strategies to prevent reinfection.
Lawson, R.H. (1990). PRODUCTION AND MAINTENANCE OF VIRUS-FREE BULBS. Acta Hortic. 266, 25-34
DOI: 10.17660/ActaHortic.1990.266.2

Acta Horticulturae