title: Оценка сортовой коллекции груши Майкопской ОС ВИР по зимостойкости
abstract: Particularly extreme peculiarities of winter in the foothills of the north-western Caucasus for 2005…2012 were considered. Winter hardiness assessment of pear varieties in the MOS VIR collection was carried out (trees of 50 and 5 years old). There was a significant differentiation among pear varieties in a resistance to a low temperature stress. Eastern European varieties occurred to be the most resistant ones, the majority of which, however, had insufficiently high quality of fruit. High frost 
journal: Contemporary horticulture