The results of introduction study of old garden roses in different natural and climatic zones

Abstract

The introduction study of old garden roses has been done in the conditions of the forest-steppe zone continental climate ( 69 cultivars) and in xeromorphous edaphoclimatic conditions of the subtropical zone (85 cultivars and varieties). The valuable characters of old garden roses in each zone have been determined. The increasing tendency for flower doubleness and their quantity has been educed in a subtropical zone. The long-term introduction study of 21 cultivars in both zones has been done and as the result of it 14 cultivars have been recommended for a wide use in greening.