Biomass, carbohydrate, and leakage conductance in buds of six ornamental tree species subjected to a “false spring” in Northeast China

Information is highly scarce about the possible effect of a late spring frost on physiological response buds in ornamental trees. In this study, temperature Changchun at Northeast China was recorded to identify characteristics false by detecting extraordinary warming and sudden freeze early April 2017. Buds six local tree species were investigated for their dynamics biomass, non-structural carbohydrates, resistance days 7, 14, 21, 28 According comparison with records historically from 2007 2016, determined. Black pine (Pinus tabuliformis var. mukdensis) had greater bud biomass than apricot (Prunus sibirica L.). Peach persica L. f. rubro-plena Schneid.) reserved carbohydrate content post-chilling black pine, willow (Salix babylonica L.) soluble sugars starch contents buds, respectively. Cumulative number below 12°C negative relationship relative conductance sorbus (Sorbus pohuashanensis [Hance] Hedl.). Chokecherry (Padus virginiana ‘Canada Red’) greatest 21 April. Overall, imposed interruption metabolism rather direct damage trees before Advanced induced more pronounced impact decline minimum temperature.