돼지감자에 있어서 系統別 栽植距離와 主莖切斷詩期가 生育 및 收量에 미치는 影響 = Influence of Spacing in Row and Main Stem Cutting Date on Growth and Yield of Two Lines of Jerusalem Artichoke

국문 초록 (Abstract)

돼지감자의 系統別 栽植距離와 主莖切斷時期를 달리하여 生育, 收量 및 糖含量의 變化를 調査하였다. 그 結果를 要約하면 다음과 같다.
白色種보다 赤色種이 株當 塊莖數가 顯著히 많았으며, 塊莖數量도 많았고, 塊莖의 크기도 컸다.
疎植하였을때에 比하여 密植하였을 경우 10a當 地上部와 塊莖收量은 增加하는 傾向이었다. 二系統에 있어서 株當 塊莖種은 草長, 莖直徑, 莖當 節數, 株當 分枝長, 地上部 收量, 株當 塊莖 乾物重과 相關關係가 있었다. 株當 塊莖數는 白色種에서 다른 形質과 有意的인 相關關係는 없었으나 赤色種에서는 다른 形質과 有意的인 相關이 있었다.
主莖切斷時期에 있어서 切斷區에 比해서 無切斷區가 地上部와 塊莖收量이 많았으며, 切斷時期가 이를 수록 약간 增收하는 傾向을 보였다.
白色種이 赤色種보다 糖含量이 높았으며 收穫時期別 糖含量이 變化는 거의 없었다.
貯藏中의 糖含量이 變化는 貯藏期間에 따라 거의 變化 없었으며, 長期間 貯藏이 可能하였다.

다국어 초록 (Multilingual Abstract)

Field experiment was conducted to determine the effects of spacing in row and main stem cutting date on growth and yield of Jerusalem artichoke. Investigated were also the effects of harvesting date and storage period on sugar content of tuber.
The results obtained are as follows;
The red line had more tubers per plant and smaller tuber than the white line but the white had more tuber yields than the red line.
Top and tuber yield of two lines increased with decreasing spacing in row. Fresh weight of tuber per plant correlated with plant length, diameter of stem, number of nodes per stem, length of branch per plant, fresh and dry weight of top per plant and dry weight of tubers per plant in two lines. Significant correlations between the number of tubers per plant and the other characters were observed in the red lines but were not in the white lines.
Top and tuber yield of two lines were decreased by main stem cutting dates and tended to decrease with delaying cutting date of main stems.
The white line had a higher sugar content than the red line. Sugar content of two lines was not affected by harvesting date.
There was almost no change of sugar content during the storage period indicating that storage of tuber for a long time is possible.