Thanks for publishing that video Satya!
I watched the video and I have similar concerns as Jessie expresses in the video, tall durian and dabai.
I could definetly try this becuase it has high sucess rate and can be done in the field easy. No risk of losing a dabai tree, that's one of my biggest concern with grafting for me, loss of the tree when it is small. Dabai seeds are not easy to come by.
I have a sansapote in the field that is growing well but they aren't to vigorous here so no problem for me with them.
But dabai tree's do put out many shoots when cut so would be hard t graft it to itself, and even sometimes they die when tipped when they are young.
3 out out of 5 times onlt one new shoot comes up for dabai. But with many other tree's you get multiple, like durio for instance.
I can see that cutting of the apex auxin dominat leader would push growth in the remaining growing tips and then they grow away from each other creating a wide tree. But still one tip will try to dominate so have to cut that one even with this method I assume.
I wounder how much it will dwarf a dabi longterm, maybe the graft juncture would reduce sap flow. But it might take longer before the tree becomes mature since the sap flow might be restricted.
The Dabai still have to attain a certain girth I assume. And when I have observed tree it seams that the first branches appear above 3 m, no matter how much sun the tree gets, it seams to be a trait of the Canarium family. Similar with Canarioum ovatum.
I have found that girth is more reliable as a measure of maturity then age. But sometimes that is not the case.
I have one fiji longan pommetia pinnata (Matoa) seedling, that is fruiting at 10cm girth, but no other fiji longan is. So idk what's up with that. Even older other matoa at 20cm with good enviromental conditions arent' flowering and fruiting.
The 10cm girth one is healthy and puts forth good fruit, not fruiting because it's dying etc.