The new poplar hybrids’ growth in the Central Black Earth region of Russia

Abstract

Abstract The description of the following ten poplar hybrids bred in All-Russian Research Institute of Forest Genetics, Breeding and Biotechnology (originator is A P Tsarev): white poplar hybrid ‘Veduga’, black poplar hybrids ‘Vertical’ and ‘Prolog’ and intersectional poplar hybrids ‘Strojn’, ‘Arctur’, ‘Arta’, ‘Versija’, ‘Peredel’, ‘Saturija’ and ‘Erida’ have been testing in the Shekhman’ experience site in the forest-steppe zone of Tambov region is presented. The rootage of 1-year-old hybrids and further its survival during 33 years of research are shown. It is noted that the dry year 2010 significantly affected the survival of plants, which resulted in its reduction in subsequent years in the whole site by almost half. The hybrids ‘Versija’, ‘Peredel’, ‘Saturija’ and ‘Erida’ have been more drought-resistant, the survival of which by the year 2015 did not fall below 70 %. The promising hybrids for massive, protective and greenery plantings of the region have been allocated. The best hybrids on growth energy and productivity in the region: ‘Veduga’, ‘Erida’, ‘Peredel’ and ‘Versija’, which in 25 years had average height of 20.4-23.8 m, diameter – 26.2-29.8 cm and volume of the trunk – 0.5-0.7 m3. At the age of 33 their indicators were 23-25 m, 28-32 cm and 0.55-0.8 m3 respectively.