セルの形状がキャベツセル成型苗の生育と定植後の根系発達に及ぼす影響(繁殖・育苗)  [in Japanese] Effects of Plug Cell Shape on Growth of Seedlings and Development of Root Systems in Cabbage after Transplanting(Propagation & Transplant Production)  [in Japanese]

セルトレイのセルの形状(通常のセル, セルの内壁面を凸型にしたセル, 壁面にスリットを入れたセル)がキャベツセル成型苗の生育と定植後の根系発達に及ぼす影響について検討した.セルトレイの内壁面の形状を凸型にすることにより, 苗の生育が若干抑制されたが, 根巻きが抑えられるとともに, 縦方向に伸長した根が確保され, その結果, 定植後の深根性が高まり, キャベツ作物体の姿勢の安定性が向上した.一方, セルの側面にスリットを入れた場合には, 育苗期の根巻きは抑えられたが, 定植後の深根性は高まらなかった.なお, セルの形状によるキャベツ収量への影響は認められなかった.

The experiments were conducted to investigate the effects of plug cell shape on growth of seedlings and development of root systems in cabbage after transplanting. A plug cell with a convex inner wall, a cell with a slit wall, and a normal cell were used for examination. There was no remarkable difference in seedling growth due to cell shape, though the growth of seedlings in convex cells was slightly suppressed. There was no influence of cell shape on cabbage head weight. Convex cells and slit cells were found to suppress root circling. The roots of seedlings grown in convex cells extended deeply after transplanting and uprooting resistance of the plants increased. However, the roots of seedlings grown in slit and normal cells did not extend deeply after transplanting.