黃酸銅과 黃酸亞鉛의 葉面撒布가 칼슘의 培養條件이 다른 狀態에서 자란 '후지'實生의 Ca 移動性과 分劃別 칼슘農度에 미치는 影響 = Effect of Foliar Sprays with Cupric Sulfate and Zinc Sulfate on Ca Mobility and Fractionated Calcium Concentrations in 'Fuji' Apple Seedlings grown under Different Nutrient-Calcium Conditions

국문 초록 (Abstract)

本 試驗은 0.2% 黃酸銅 또는 0.2% 黃酸亞鉛의 葉面撤布時 培養液의 Ca濃度가 2ppm과 200ppm으로 서로 다른 條件에서 4주 동안 자란 11주된 사과 '후지實生 과 4가지 分劃別 칼슘의 濃度에 미치는 影響을 보고자 實施하였다. 葉面撤布 3주 후에 葉의 總칼슘의 濃度는 培養液의 칼슘 供給水準과 관계없이 모두 葉面撤布區와 無撤布區간에 차이가 없었다. 黃酸銅 葉面撤布區는 다른 處理區에 비하여 總 칼슘 濃度 중 固定性 칼슘인 HCl-Ca의 濃度가 낮고, 置換性 칼슘 (NaNO₃-Ca)의 濃度가 높은 경향이었다. 이 경향은 칼슘 高農度 灌注區(Ca 200ppm)보다는 칼슘 低濃度 灌注區(Ca 2ppm)에서 더 뚜렷하였다. 칼슘水準別로는 低濃度 灌注區가 高農度 灌注區에 비하여 모든 分劃에서 濃度가 현저히 낮았다. 葉面撤布시 뿌리에 灌注한 Ca은 黃酸銅 葉面撤布區 가 黃酸亞鉛 葉面撤布區나 無撤布區에 비하여 樹體下部의 葉과 줄기에서 Ca의 比放射能이 낮게 計測되었지만, 다른 部位에서는 葉面撤布 處理間에 일정한 경향을 보이지 않았다. 칼슘水準간에는 樹體 上下部의 줄기와 뿌리部位에서 低濃度 灌注區가 高濃度 灌注區에 비하여 Ca의 秘方射能이 현저하게 높게 計測되었다. 部位別로는 樹體 上部의 葉에서 樹體 下部의 葉보다 Ca의 蓄積이 현저하게 높았다.

다국어 초록 (Multilingual Abstract)

This ezpeiment was carried out to study the effects of foliar sprays of 0.2% cupric sulfate of 0.2% zinc sulfate on Ca mobility and 4 fractionated calcium concentrations in 11 week-old 'Fuji' apple seedings (Malus domstica Borkh.) grown under two different calcium conditions, 2ppm and 200ppm, for 4 weeks. At 3 weeks after foliar spray treatments, cupric sulfate of zinc sulfate sprays had no effect on total Ca concentrations of leaves in the apple seedlings regardless of calcium conditions in the nutrient solution. Of the total Ca concentration, the distribution of Ca extracted with 2N HCl, which is considered as fixed-Ca, was lower in the leaves of apple seedlings sprayed with 0.2% cupric sulfate than in those of other treatments. Whereas the distributionn of Ca extracted with 1N NaNO₃ which iis considered as exchangeable Ca, was higher in the former than in the latter trees. The tendancy was more clear in the seedlings grown under low Ca level than in the seedlings grown under high Ca level. Leaf Ca concentration of the seedlings supplied with low Ca level was significantly lower than that of the seedlings supplied with high Ca level in all foliar spray treatments. The accumulation of root-applied Ca at the time of foliar application was lower in the leaf and stem of lower parts of the seedlings sprayed with 0.2% cupric sulfate than those of the seedlings sprayed with 0.2% zinc sulfate and the unsprayed seedlings. But no differences were observed in accumulation of Ca in the other parts of the seedlings among foliar spray treatments. In all foliar spray treatments, radioactivity of Ca was detected higher in stem and root parts of the seedlings grown under low Ca level than those grown under high Ca level. The radioactivity of Ca detected significantly higher in leaves of upper parts than in lower parts of the seedlings in all treatments.