|Author: ||R. H. Converse|
Classical plant virological techniques together with recent advances in the techniques of molecular virology have brought great increases in our knowledge of strawberry viruses.
Thus, in the last few years, new strawberry viruses have been described, improved methods for virus detection in strawberries have been developed, virus occurrence in wild strawberry populations has been studied, and additional sources of genetic resistance sought.
Much has been accomplished since the last Symposium in this series.
Nevertheless, our knowledge on important problems is still incomplete.
Thus, some of the major strawberry viruses are still virtually uncharacterized.
We know little about strain differentiation within strawberry viruses except what is learned by bioassay.
Simple, rapid, sensitive methods are still needed to detect the major aphid-borne strawberry viruses.
Much remains to be done to describe the role of native plants and vectors in strawberry virus ecology.
Furthermore, for virus control, we must expand the identification and incorporation into strawberry cultivars of plant genes to confer resistance to virus vectors and resistance and tolerance to viruses.
Studies on the incorporation into strawberry of portions of viral genomes to confer resistance or to reduce disease damage need to be extended.
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