ISSN 1392-3196 / e-ISSN 2335-8947
Zemdirbyste-Agriculture, vol. 107, No. 2 (2020), p. 185–190
DOI 10.13080/z-a.2020.107.024

The variation of the content of dehydrin proteins in the bark of Malus spp. trees differing in winter hardiness in Southern Cisbaikalia conditions



The aim of the research was to study the dynamics of dehydrine proteins of apple (Malus spp.) trees in Southern Cisbaikalia conditions. Siberian berry apple tree and domestic or cultivated apple tree as well as their interspecific hybrids of various crossing generations, that showed differences in winter hardiness in field studies, were used as the object of the research. Samples of plant material were collected monthly (September to May) during two experimental years. The results showed that the qualitative composition of dehydrins in the bark of an apple tree did not depend on the cultivar. Proteins with a mass of 63, 60, 52, 45, 34 and 32 kD were determined in the dehydrin spectrum of all the studied apple tree genotypes. Dehydrin with a molecular mass of 52 kDa was present throughout the dormancy. The number of other proteins varied depending on the season. Significant differences were found for proteins with masses of 60 and 34 kDa. The revealed peculiarities of the 34 kDa protein content can be associated with the adaptive potential of apple trees in the conditions of Southern Cisbaikalia.

Key words: apple tree, cultivars, dehydrins, winter hardiness.

Full text: 107_2_str24.pdf