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구영본 ( Gu Yeong Bon ),여진기 ( Yeo Jin Gi ),구관효 ( Gu Gwan Hyo ),김영중 ( Kim Yeong Jung ),여인선 ( Yeo In Seon ) 한국산림과학회 2003 한국산림과학회지 Vol.92 No.6
This study was conducted to select poplar clones that can grow well in given specific environmental sites. Survival rate, height, and diameter growth of thirteen hybrid clones that had been developed in Korea and eight exotic clones planted in 1994 were investigated in 2002. The results are as follows : Mean survival rates at age 3, 6 and 9 were 45, 41 and 37%. respectively. K-246, one of aspen hybrid clone, showed the highest mean survival rate(70%) at age 9, however, P. ciliata introduced from Pakistan showed the lowest mean survival rate(5%) at the same age. Mean volume growth was statistically significant among clones and sites. Suwon poplar, as a control, was the best in mean volume growth(0.1615m) among the clones, but the clone showed poor survival rate and growth in Jinju plantation. 64-88 and K-246 clones showed relatively good growth and high survival rate at the foot of mountain like Jinju plantation.
양돈폐수 처리에 의한 포플러클론의 산화스트레스와 항산화반응
제선미 ( Sun Mi Je ),여진기 ( Jin Gi Yeo ),우수영 ( Su Young Woo ) 한국농림기상학회 2011 한국농림기상학회지 Vol.13 No.3
We studied the influence of livestock waste leachate on oxidative damage and antioxidative responses in poplar clones in August which increase the demand of antioxidants because of high temperature and high light during this period. We measured ion leakage, antioxidant enzyme activities (APX, GR), and carotenoid contents. Oxidative damage and antioxidative responses by treated livestock waste leachate in poplar clones showed various results. We divided poplar clones into three groups using the criteria based on ion leakage which represent cell damage induced oxidative stress. Eco 28, 62-10, Bonghwa1 and Dorskamp belonged to the first group in which the cell damaged level was lower than that of the control. The results suggest that this group augmented for demand of antioxidative in summer because high concentration of nitrogen induced by treatment of live stock wastes acted as environmental stress. Consequently, they failed to keep up the homeostasis of reactive oxygen species. The second group in which the cell damaged level was similar to that of the control was Suwon, 72-30 and 72-31 clones. Finally, 97-18 clone belonged to the third group in which the cell damaged level was lower than that of the control group. In this case, nitrogen treated by livestock waste leakage decreased oxidative stress. 97-18 clone was the clones with the least damage in summer oxidative stresses treated by livestock waste leakage. These results suggest that the high concentration nitrogen due to the livestock waste leakage can act differently upon the clones. We speculate that the added oxidation damage in the summer (growing season) may have an effect on the total fresh weight and also influence the purification ability for livestock waste leakage. However, further studies are needed for the confirmation.