Studies on water movement and proper curing condition during cambium development period of grafted vegetable seedlings

研究了嫁接植株形成层的发育和水分从接穗到砧木的运移过程。在嫁接过程完成之前，嫁接番茄中水分的运动明显缓慢，这是因为通过不完全嫁接部分的高水分传输阻力。因此，嫁接不完善引起的茎内水分运动变化对嫁接番茄叶片光合作用产物的影响。番茄与茄子、接穗与砧木的嫁接，水分输送阻力随嫁接不良程度的增加而增大，表现为接穗与砧木茎粗的差异。茎粗差异与叶片锤度也呈正相关。因此，番茄叶片的锤度因嫁接不完善导致水分运输阻力低而引起的水分胁迫而增加。

The process of development cambium layer of grafted plants and water movement from scion to stock was investigated. Before grafting process was completed, water movement in grafted tomates were significantly slow due to high water transport resistance through the incompleate grafted parts. Accordingly, influence of changes in water movement in stems due to imperfect grafting upon photosynthetic products in grafted tomato leaves. In case of grafting between tomato and eggplant, scion and stock respectivley, water transport resistance became large according to increase of degree of imperfect grafting that are indicated by difference of stem diameters of scion and stock. Difference of stem diameters and brix in tomato leaves were also positively correlated. Thus brix in tomato leaves increased by water stress caused by low water transport resistance due to imperfect grafting.