Characterizing Positive Xylem Pressure in Grafted Watermelon

Tissue decay in the graft junction has been observed in Fascination watermelon grafted onto pumpkin rootstocks, but not in Maxima. Phyto-pathological analysis ruled out a single destructive pathogen, but several mild pathogens were detected, most likely infecting only structurally compromised tissue.

​

We aim to characterize physiological differences between the two cultivars, focusing on plant hydraulics and positive xylem pressure.

​

We developed a system to isolate and continuously measure the positive component of xylem pressure using pressure sensors.

​

Student: Ofer Gaspan

Collaborator: Dr. Amnon Cochavi