복숭아 光合成能力의 時基別 變動과 品種間 差異 = Variation of Photosynthetic Ability according to Shoot Sampling Dates and Peach Varieties

국문 초록 (Abstract)

복숭아 矮性台木 利用에 의한 樹形의 矮性化는 近年의 일이며 低樹高栽培의 實用化 趨勢에 副應하여 矮性台木으로서 有望視되는 Prunus Persica(壽星桃)로서 接首品種은 8年生된 白鳳과 白桃를 供試하여 6月15日, 7月15日, 8月15日과 9月15日에 걸쳐서 地上 3.5m, 2m, 50cm높이에 着生된 主枝의 側枝新梢를 採取하여 잎의 光合成 能力을 分析한 結果는 다음과 같다.
1. 白鳳의 部位別 新梢의 光合成 速度는 上部＞中部＞下部의 順으로 빠르게 進行되었고 照度가 增加할수록 光合成 速度도 빨라지는 傾向이였다.
2. 白桃의 部位別 新梢의 光合成 速度는 6月과 9月은 上部가, 7月은 下部가, 8月은 中間 部位가 각각 높았다.
3. 복숭아의 光合成 能力은 6月부터 8月까지는 점점 增加되다가 9月부터 떨어지며, 7월과 8월은 白鳳이, 8月과 9月은 白桃가 光合成 能力이 더 큰 것으로 나타났다.

다국어 초록 (Multilingual Abstract)

There is a growing tendency of dwarfing fruit trees. So in this study the 8-year-old peach varieties, "Baekbong" and "Baekdo", engrafted on Prunus persica, which is promising for dwarf stock, were tried as experimental materials. The shoot sampling was done on June 15, July 15, August 15, and September 15. And the parts or smpling were 3.5m, 2m and 50cm above earth surface, respectively. The shoots were sampled from the outer parts of main branches, and the photosynthetic ability of the shoot leaves was analyzed as follows:
1. The photosynthetic rate of Backbong's shoots was highest at the top main branches; second highest at the middle ; and lowest at the lower main branches. As the light intensity increased, the photosynthetic rate became higher.
2. The Photosynthetic rate was highest at the top main branches in June and September ; in July, it was highest at the lower part ; and in August, it was highest at the middle part.
3. The photosynthetic ability of peaches increased gradually from June till August, but it decreased after September. In July and August, the photosynthetic ability of Baekbong was higher ; in August and September, that of Baekdo was higher than that of Baekbong.