Abstract
The article is dedicated to the 115th anniversary of Ivan Leontievich Zelenin. The biography of a scientist - breederampelographer, viticulturist, a participant in the Great Patriotic War is reproduced. In the pre-war and aſter-war years he directed all his efforts to the most peaceful work for the benefit of viticultural and winemaking industry of the Russian Federation. Ivan
Leontievich is known for his scientific research results, related to the technologies and reproduction of varieties. He is one of the authors of a unique work – The Ampelography of the USSR, the author of many monographs and other publications on major issues of viticulture – breeding and ampelography.