sentences:  The Russian Institute of Plant Breeding named after Academician Nikolai Vavilov is located in two neo-Renaissance buildings.The institute has a unique collection of 160,000 cultivated plants, which Vavilov collected while travelling in every continent from 1921 to 1940.After the end of the war, a journal published in London reported that Vavilov's collection was lost during the Siege of Leningrad.