Abstract
The genotypic diversity maintained in grapevine repositories can provide an invaluable source of resistance to diseases. Resistance to downy mildew (Plasmopara viticola) of most main and minor grapevine varieties grown in Spain was evaluated in the germplasm collection at El Encin (IMIDRA, Madrid). Resistance assessment using the leaf disc technique was compared with the results of field evaluations of natural infected plants according to OIV452-1 and OIV452 descriptors, respectively. A good correlation was found among both methods. Results ranged from very low to high levels of resistance to fungal infection, with most varieties showing high levels of susceptibility, as expectable in Vitis vinifera varieties, but some of them (usually those originally collected from humid temperate regions in Spain) were found to be less susceptible.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
