Despite the low rate of growth in production during the Soviet period , some particularly impressive advancements were made in seed development , of which the most useful was the development of a frost - resistant sugar beet , further expanding the growing range of the sugar beet .
Despite the low rate of growth in production during the Soviet period there were some particularly impressive advancements were made in seed development . 
 Of which the most useful was the development of a frost resistant sugar beet , further expanding the growing range of the sugar beet .