ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Magnetic resonance imaging investigation of the rehydration of cut roses.

Valle, R. E., Evans, R. Y., Bobroff, S. and Reid, M. S.

ISHS Acta Horticulturae 553: 495-498.

2001

บทคัดย่อ

Magnetic resonance imaging was used to visualize the dehydration and rehydration of cut rose (Rosa sp. cultivars Cara Mia, Sonia and Tineke) stems. Freshly harvested roses were rehydrated in water at depths of 2, 5, 10, 15 or 20 cm. Rehydration was accelerated by modest hydrostatic pressures on the stems. In Cara Mia, the uptake was increased, but a time lag before the increase was observed at low pressure. In Sonia, pressure was inducing movement through a resistive element in the vascular system. During rehydration, the greatest increase in water content occurred at the stem base, presumably as embolized and cavitated vessels were refilled. MRI images showed vessel clusters refilling as hydration progressed.