Influence of the method of grafting on survival and growth of pedunculate oak (<i>Quercus robur</i> L.)

Abstract

The aim of the study was to identify the most effective method of grafting the pedunculate oak in greenhouse conditions on two-year-old seedlings with a closed root system. A comparison was made of five methods of grafting on survival and growth of grafts. The following methods were used: «splice», «into a bag», «in split», «budding», «into acorn sprout». The best results in the survival of the grafts were given by the «splice» (42%). The largest increments were shown by the «in split» method (19,0 + 3,1 cm). The distribution of grafting by the magnitude of growth was significantly different from normal. The growth rates of grafting during the growing season had a high individual variability - the coefficients of variation at the age of 36, 60, and 83 days are equal, respectively, to 85, 75, and 73%. In the first growing season, clones did not show any effect on the size of growth. During this period the graft method has the greatest influence, which affects the specificity of the intergrowth of the stock with the graft.