其他摘要：We investigated the early performance of current and one-year-old containerized sugi cuttings planted in late summer (September) and compared it with that of current-year bare-root cuttings. The leaf water potential of bare-root cuttings declined abruptly after the planting, and remained lower than that of the containerized cuttings for the following one month, but this water stress did not result in tree death. One-year-old containerized cuttings had the tallest tree height at planting, followed by current-year containerized cuttings and bare-root cuttings. However, the height growth during the second growing season was largest for bare-root cuttings, which resulted in no significant difference in tree heights at one year after planting among the cutting types. The difference in the dry matter allocation to above- and below-ground parts among the cutting types observed at planting also disappeared one year after the planting. At the end of the planting year, we observed a larger incidence of inclination damage for one-year-old containerized cuttings, and of the symptom of wilting in apical shoots for bare-root cuttings. However, these differences also disappeared one year after the planting. We concluded that the superiority of the containerized cuttings in summer planting was limited, at least under the moderate/light drought conditions for the case of the present study, though the containerized cutting implied more tolerance to dryer conditions.
