Stock Photo - Feb. 24, 1962 - After the leaf has been impregnated with the virus it is partially washed off by a syringe to prefent rapid inhibiting effects.:Scotland still leads the world in potato breeding. It was Dr. William Black of Boghall Farm near Ediaburgh, Scotland. Who discovered the world's best and flawless potato in 1946 after working on it for 20 years and called it the 'Craig's Bounty' Researches still goes on to counter Stunt Deseases in potatoes and the various odd ailments that effect it. Dr. Black continues his researches with other experts like Dr. G. Cockerman and D- --airi R Ghee at the Scottish plant Breeding Station at Cortorphine, Edinough, in the hope they will be able to imune ill types of potato plants and tube-s from the dreaded wart and blights. Experiments are being -ade with grafts on the Solanum Demissum, a wild Mexican species which is immune from blight a and is used for breeding blight resisting potatoes.A special type chichilla raboit is bred to help researches. Over 2,000 varieties of potatoes including many types grown in other parts of the world, are grown and tested in field lots, and if they are found to be no to a given standard the breeders submit their seedlings to the Department of Agriculture and Seed Testing Station next door to their own headquarters. (Credit Image: © Keystone Pictures USA/ZUMAPRESS.com)