Non-structural carbohydrates in sprouts of Robinia pseudoacacia trees after cutting treatments

抄録

Non-structural carbohydrate (NSC) are key regulators to understand the survival and growth of the plants to environmental stress. The NSC concentration in each organ is varied according to the season, plants character and stress pressure. We cut 90 trees of Robinia pseudoacacia with the size 2-3m height in the riverside of Akagawa, Yamagata prefecture, on spring 2019. The cutting treatments divided into short stump/clear cutting (SS) and long stump/DBH cutting (LS) in order to analyze the ability of sprouting according to the different stock of carbon in the stump. We found that the respiration rate of shoots are not significantly different in both treatments but the biomass is significantly different. We suspect that the NSC and starch should be high in roots and low in leaves because leaves reflected to produce carbohydrate by photosynthesis and roots are the main carbohydrate storage