Monthly Archives: October 2012

Jatropha curcas scion grafted on Jatropha gossypifolia rootstock

Jatropha curcas graft with Jatropha gossypifolia rootstock

We wrote about the role of grafting in Jatropha development before. Today we return to a grafted plant at our test farm. It is almost 3 years old and standing strong. When we created it a random scion was cut from one of our standard field plants and grafted on a cut Jatropha gossypifolia with kind of a reverse cleft graft.

A main property of this grafted plant is an immensely increased drought tolerance compared to Jatropha curcas samples in the vicinity. The stem appears slightly thinner (it’s on the left side in the picture. The main stick in the center is a support because the plant is exposed to constant strong winds), but is developing.

The graft is now constantly flowering and fruiting and develops a unique canopy structure. It demonstrates the many yet unexplored options available for Jatropha agronomic methods. Applying advanced grafting techniques as they are used in modern fruit tree development is only one of them. This graft was one of our first three tests ever conducted. An experienced grafting expert could have definitely done a much better looking job…

We have added another interesting picture which indicates clearly the different textures of the stem below and above the graft. More expertly done the graft would probably be closer to the ground.

Stem of grafted Jatropha

Stem of a grafted Jatropha 30 months old

It should be noted that this plant suffered from heavy mealy bug attacks lasting for almost 18 months. Development basically came to a halt during this period. The plant exhibited above average strength in surviving the attack and was one of the first in the area which recovered and started flowering and fruiting again.

The earlier article discussed in detail the potential of grafting for accelerated farm development and recovery of suspended Jatropha projects with future elite cultivars. At Bionic Palm we see great potential in such an approach and keep experimenting with it while we move along with our hybrid breeding program.